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Authors: Imlay, Ralph W.
Editors:
Date: /1964
Title: Middle Bajocian ammonites from the Cook Inlet region, Alaska
418-B , , 57 p., 29 pls.
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Document Type: Article\Abst.\Chapter\report
Annotation: ABSTRACT

Jurassic ammonites of middle Bajocian age occur in the Tuxedni Group along the northwest side of Cook Inlet and in the Tuxedni Formation in the eastern part of the Talkeetna Mountain, Alaska. Numerically the dominant families are the Otoitidae and Stephanoceratidae. The families Phylloceratidae, Sonninidae, Oppelidae, and Perisphinctidae together compose only about one-third of the total specimens.

The Tuxedni Group has not furnished any ammonite genera that characterize the European zone of Sonninia sowerbyi at the base of the middle Bajocian. It has, however, furnished ammonites that characterize the next higher zones of Otoites sauzei and Stephanoceras humphriesianum.

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HH 116 (Mesozoic loc. 27577) , Talkeetna Mts , Western Gulf Oil Co., 1959. Talkeetna Mountains (A-1) quad., near Crooked Creek south of Nelchina, lat 62 deg. 02'00" N., long 147 deg. 18'00" W., Tuxedni Formation, lower part. (description from Imlay, 1964, USGS Prof. Paper 318-B, p. B22); [27577 Western Gulf Oil Co., 1959. Talkeetna Mountains A-1 quad., near Crooked Creek south of Nelchina, Lat. 62° 02' N., Long. 147° 18' W. Tuxedni formation equivalent, lower part. (description from Imlay, 1961, p. 469)]; [USGS Mes. Cat.: 27577 HH 116. Middle Jurassic. Lower Tuxedni fm. equivalent. Crooked Creek area. South of Nelchina, Talkeetna Mtns. quad., Lat. 62°02' N., Long. 147°18' W. Coords. 22.22; 0.98, Alaska. Coll. by Western Gulf Oil Co.]
Parabigotites crassicostatus Imlay
52AGz85 (Mesozoic loc. 24113) , Talkeetna Mts , From landslide scar 1.63 miles north of mouth of Albert Creek. (from E&R report of R.W. Imlay, January 21, 1953) [Arthur Grantz, Richard Hoare, and R.W. Imlay, 1952. Talkeetna Mountains A-1 quad. From a landslide scar 1.63 mi (2.6 km) north of the mouth of Albert Creek. Tuxedni Group 200-250 ft (61-76 m) above base. (description from Imlay, 1984, USGS Prof. Paper 1322, p. 30)][Imlay, 1964, p. B22 provides following description: "Arthur Grantz, Richard Hoare, and R.W. Imlay, 1952. Talkeetna Mountains (A-1) quad. From a landslide scar 1.63 miles north of the mouth of Albert Creek. Tuxedni Formation, 50-250 ft above base."]; [24113 Arthur Grants, Richard Hoare and R. W. Imlay, 1952. Talkeetna Mountains A-1 quad., from a landslide scar 1.63 miles north of mouth of Albert Creek. Lower part of Tuxedni formation equivalent. (description from Imlay, 1961, p. 469)]
Phylloceras cf. P. kunthi Neumayr
Macrophylloceras sp. undet. A
Holcophylloceras costisparsum Imlay, n. sp.
Lytoceras cf. L. eudisianum d'Orbigny
Sonninia cf. S. projectifer Buckman
Sonninia cf. S. patella Waagen
Sonninia (Papilliceras) cf. S.espinazitensis Tornquist
Witchellia cf. W. adnata Imlay, n.sp.
Witchellia? aguilonia Imlay, n. sp.
Witchellia? aff. W.? aguilonia Imlay, n. sp.
Lissoceras? sp.
Bradfordia costidensa Imlay, n. sp.
Otoites cf. O. pauper Westermann
Emileia? sp.
Stephanoceras obesum Imlay, n. sp.
Stephanoceras (Skirroceras) juhlei Imlay, n. sp.
Stephanoceras (Skirroceras) nelchinanum Imlay, n. sp.
Stephanoceras (Skirroceras) cf. S. nelchinanum Imlay, n. sp.
Parabigotites crassicostatus Imlay
55AGz245a (Mesozoic loc. 25945) , Talkeetna Mts , Not given in Imlay E&R of 11/28/55, however, transmittal sheet of Grantz (Oct. 28, 1955) states: "Talkeetna Mtns. (A-1) 62 deg. 02'28" N, 147 deg. 22'59" W. Chinitna formation." (coordinates of 3.82-2.82 penciled in) [Imlay, 1964, USGS Prof. Paper 318-B, p. B22 provides the following description: "Arthur Grantz, 1955. Talkeetna Mountains (A-1) quad., lat. 62 deg. 02'28" N., long 147 deg. 22'59" W., Tuxedni Formation, upper half of lower sandstone."]
Witchellia sp.
57AGz43N (Mesozoic loc. 26723) , Talkeetna Mts , Talkeetna Mtns. (A-1) Coordinates 2.58-2.32. Lat. 62 deg. 02'00" N., Long. 147 deg. 25'15" W. (description from Imlay E&R dated 12/12/57) [Imlay, 1964, USGS Prof. Paper 318-B, p. B22 provides the following description: "Arthur Grantz, 1957. Talkeetna Mountains (A-1) quad., lat 62 deg. 02'00" N., long 147 deg. 25'15" W., Tuxedni Formation, upper half of lower sandstone."]
Sonninia? n. sp. undet.
54AFy28 (Mesozoic loc. 25345) , Talkeetna Mts , Talkeetna Mtns. (A-2). Lat. 62 deg. 00'46"N., Long. 147 deg. 34'02 1/2"W. (description from Imlay E&R 1954 report) [Imlay, 1964, USGS Prof. Paper 418-B, p. B22 provides the following description: "L.F. Fay, 1954. Talkeetna Mountains (A-2) quad., lat. 62 deg. 00'46" N., long. 147 deg. 34'02 1/2" W. Tuxedni Formation, upper siltstone."]
Bradfordia costidensa Imlay, n. sp.
54AFy29 (Mesozoic loc. 25346) , Talkeetna Mts , Talkeetna Mtns. (A-2). Lat. 62 deg. 00'41"N., Long. 147 deg. 34'16 1/2"W. (description from Imlay 1954 E&R report) [Imlay, 1964, USGS Prof. Paper 318-B, p. B22 provides following description: "L.F. Fay, 1954. Talkeetna Mountains (A-2) quad., lat. 62 deg. 00'41" N., long 147 deg. 34'16 1/2" W., Tuxedni Formation, upper siltstone."]
Stemmatoceras sp. juv.
52AHr51 (Mesozoic loc. 24176) , Anchorage , Pass Creek, 0.35 miles above its mouth. Basal sandstone of Tuxedni Formation. (description from Imlay E&R report of 01/21/1953)[Imlay, 1964, p. B22 provides following description: "Richard Hoare, 1952. Anchorage (D-2) quad., Pass Creek, 0.35 mile above its mouth. Basal sandstone of the Tuxedni Formation, 100-200 ft. above base."]
Holcophylloceras sp. juv.
55AGz309 (Mesozoic loc. 25946) , Anchorage , Not given in Imlay E&R of 11/28/55 or 5/23/61, however, transmittal sheet of Grantz (Oct. 28, 1955) states: "Anchorage (D-2) 61 deg. 57'47" N, 147 deg. 24'21" W. Tuxedni formation." (coordinates of 11.20-14.76 penciled in) [Imlay, 1964, USGS Prof. Paper 318-B, p. B22 provides the following description: "Arthur Grantz, 1955. Anchorage (D-2) quad., lat 61 deg. 57'47" N., long 147 deg. 24'21" W. Tuxedni Formation, 200-300 ft above base."]
Emileia? sp.
52AGz182 (Mesozoic loc. 24215) , Anchorage , Alfred Creek, 0.8 miles east of Papoose Creek, from shale and siltstone member of the Matanuska Formation (description from Imlay, 1953 E&R report) [Imlay, 1964, USGS Prof. Paper 418-B, p. B-22 provides following description: "Richard Hoare and Arthur Grantz, 1952. Anchorage (D-2) quad., Alfred Creek, 0.8 mile east of Papoose Creek. Tuxedni Formation, upper siltstone."]
Holcophylloceras sp. juv.
Witchellia cf. W. adnata Imlay, n. sp.
Bradfordia costidensa Imlay, n. sp.
Labyrinthoceras glabrum Imlay, n. sp.
55AGz163 (Mesozoic loc. 25942) , Anchorage , Not given in Imlay E&R of 11/28/55, however, transmittal sheet of Grantz (Oct. 28, 1955) states: "Anchorage (D-2) 61 deg. 57'09" N, 147 deg. 27'56" W. Tuxedni formation." (coordinates of 9.30-13.99 penciled in) [Imlay, 1964, USGS Prof. Paper 318-B, p. 22, provides following description: "Arthur Grantz, 1955. Anchorage (D-2) quad., lat 61 deg. 57'09" N., long 147 deg. 27'56" W., Tuxedni Formation, upper siltstone."]
Witchellia? sp.
Labyrinthoceras glabrum Imlay, n. sp.
52AGz275 (Mesozoic loc. 24134) , Anchorage , 2.63 miles N 51 1/2 degrees E of mouth of Sheep Creek. Base of a siltstone member in the Tuxedni Formation. (description from Imlay E&R report of 01/21/1953)[Imlay, 1964, USGS Prof. Paper 318-B, p. B22, provides following description: "Arthur Grantz, Richard Hoare, and R.W. Imlay, 1952. Anchorage (d-2) quad., 2.63 miles N. 52 1/2 miles E. of mouth of Sheep Creek. Tuxedni Formation, base of upper siltstone".]
Stephanoceras (Skirroceras) sp. undet.
36 of G.C. Martin, 1913 (Mesozoic loc. 8585) , Anchorage , One ammonite from north bank of Caribou Creek. 3/4 mile below Billy Creek, Upper Matanuska Valley, Alaska. Middle Jurassic. N.B. p. 3. Coll. G.C. Martin, Aug. 26, 1913 (from USGS Washington, D.C. Mesozoic fossil locality register) [North bank of Caribou Creek three-fourths mile below Billy Creek. G.C. Martin, 1913. (description from Martin, 1926, USGS Bull. 776, p. 226)] [Imlay, 1964, USGS Prof. Paper 418-B, p. B22, provides the following description: "G.C. Martin, 1913. Talkeetna Mountains. North bank of Caribou Creek 0.75 mile below Billy Creek. Tuxedni Formation, upper siltstone."]
Stephanoceras (Skirroceras) nelchinanum Imlay, n. sp.
52AGz198 (Mesozoic loc. 24120) , Anchorage , Caribou Creek, 0.62 miles east of mouth of Billy Creek. Lower part of Tuxedni Formation. (from Imlay E&R report of 1/21/53) [USGS Washington D.C. Mesozoic fossil locality register provides following description: "Tuxedni fm.-Jurassic-Alaska. About 1/2 mile SE of 24119. 0.62 miles east of Billy Creek."][Imlay, 1964, USGS Prof. Paper 318-B, p. B22 provides following description: "Arthur Grantz, Richard Hoare, and R.W. Imlay, 1952. Anchorage (D-2) quad., Caribou Creek 0.62 miles east of Billy Creek. Tuxedni Formaiton, upper siltstone."]
Macrophylloceras sp. undet. B
Sonninia cf. S. nodata Buckman
Sonninia cf. S. patella Waagen
Witchellia cf. W. laeviuscula (J. de C. Sowerby)
Stephanoceras (Skirroceras) juhlei Imlay, n. sp.
Stephanoceras (Skirroceras) nelchinanum Imlay, n. sp.
Stephanoceras (Skirroceras) cf. S. nelchinanum Imlay, n. sp.
52AGz215 (Mesozoic loc. 24220) , Anchorage , Arthur Grantz, Richard Hoare and R.W. Imlay, 1952. Anchorage (D-2) quad., north side of Caribou Creek 0.73 mi east of Billy Creek. Tuxedni Formation, upper siltstone. (description from Imlay, 1964, USGS Prof. Paper 418-B, p. B22)
Lytoceras cf. L. eudisianum d'Orbigny
Witchellia? sp.
Stephanoceras (Skirroceras) cf. S. nelchinanum Imlay, n. sp.
6AK88A (Mesozoic loc. 3696) , Anchorage , Tributary of Caribou Creek from the west 2 miles above its mouth. Adolf Knopf, 1906. (description from Martin, 1926, USGS Bull. 776, p. 225) [Imlay, 1964, USGS Prof. Paper 418B, p. B22 provides following description: "Adolph Knopf, 1906. Talkeetna Mountains. Tributary of Caribou Creek from the west, 0.25 mile above Billy Creek at altitude of 4,050 ft. Tuxedni Formation, probably upper silstone.]
Macrophylloceras sp. undet. A
Holcophylloceras sp. juv.
Witchellia sp.
Bradfordia? caribouensis Imlay, n. sp.
Stephanoceras (Skirroceras) sp. undet.
6AK88B (Mesozoic loc. 3697) , Anchorage , 6AK88B. Same as 6AK88A. Boulder in stream bed. Adolph Knopf, 1906. (from Martin, 1926, USGS Bull. 776, p. 225) [Imlay, 1964, USGS Prof. Paper 418B, p. B22 provides following description: "Adolph Knopf, 1906. Talkeetna Mountains. Boulder in stream beds at same location as Mesozoic loc. 3696"]
Macrophylloceras sp. undet. A
Sonninia sp. juv.
Stephanoceras (Skirroceras) sp. undet.
16 of G.C. Martin, Overbeck, and J.B. Mertie, 1913 (Mesozoic loc. 8567) , Anchorage , Second creek entering Boulder Creek from the north above the canyon (creek north of extreme west end of Anthracite Ridge), 3 1/5 miles up creek. G.C. Martin, 1913 (description from Martin, 1926, USGS Bull. 776, p. 225) [Imlay, 1964, USGS Prof. Paper 418-B, p. B22 provides following description "G.C. Martin, R.M. Overbeck, and J.B. Martin, 1913. Talkeetna Mountains. About 3.2 miles up second creek entering Boulder Creek from the north above the Canyon. This creek is north of extreme west end of Anthracite Ridge. Tuxedni Formation."]
Macrophylloceras sp. undet. B
Holcophylloceras sp. juv.
Lytoceras sp.
Chondroceras allani (McLearn)
Chondroceras cf. C. marshalli (McLearn)
Normannites (Itinsaites?) variabilis Imlay, n. sp.
Stemmatoceras sp.
Leptosphinctes evolutus Imlay, n. sp.
917j of Stanton, Martin, et al., 1904 (Mesozoic loc. 3010) , Kenai , Snug Harbor. Talus at base of No. 116. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Talus at base of bed 37 of section on p. 143. These probably came from either bed 36 or 37 and could not have come from higher than bed 35. T.W. Stanton, 1904."][Imlay, 1964, p. B22 provides following description: "T.W. Stanton, 1904. Tuxedni Bay area, 1.4 miles west of Fossil Point. Red Glacier Formation. Float about 700 ft. above top."]
Holcophylloceras sp. juv.
Sonninia? sp. juv.
Witchellia adnata Imlay, n. sp.
Witchellia? sp.
Otoites? filicostatus Imlay, n. sp.
Normannites kialagvikensis Imlay, n. sp.
Stephanoceras sp.
Parabigotites crassicostatus Imlay
Parabigotites? sp.
917i of Stanton, Martin, et al., 1904 (Mesozoic loc. 3009) , Kenai , Snug Harbor. No. 112 of section. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Bed 33. T.W. Stanton, 1904."][Imlay, 1964, p. B22 provides following description: "T.W. Stanton, 1904. Tuxedni Bay area, 1.24 miles west of Fossil Point. Red Glacier Formation, about 500 ft below top."]; Tuxedni Bay (description from Imlay, 1955); [USGS Mesozoic Catalogue (Washington D.C.) entry: 3009 Orig. no. 917i. Jurassic. Snug Harbor on mainland about 3 miles w. of cabin on Chasik Island, no. 112 of section, Cook Inlet Region, Alaska. Coll. T.W. Stanton, June 17, 1904.]
Sonninia cf. S. tuxedniensis Imlay, n. sp.
Sonninia? sp. juv.
Otoites cf. O. contractus (Sowerby)
Emileia constricta Imlay, n. sp.
48AI56 (Mesozoic loc. 21261) , Kenai , [Shown as locality 21 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 10'03" N., 152 deg. 42'31" W.][Imlay, 1964, p. B22 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 1.26 miles N. 87 deg. W. of Fossil Point. Red Glacier Formation. From silty sandstone 500-515 ft below top of formation in unit 34 of section measured by Stanton and Martin."]
Normannites kialagvikensis Imlay, n. sp.
Stemmatoceras cf. S. triptolemus (Morris and Lycett)
48AI57 (Mesozoic loc. 21262) , Kenai , [Shown as locality 21 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 10'03" N., 152 deg. 42'31" W.][Imlay, 1964, p. B22 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 1.25 miles N. 88 deg. W. of Fossil Point. Red Glacier Formation. Massive gray siltstone 480-500 ft below top of formation in unit 33 of section measured by Stanton and Martin."]
Sonninia (Papilliceras) cf. S. (P.) arenata Quenstedt
Emileia constricta Imlay, n. sp.
48AI58 (Mesozoic loc. 21263) , Kenai , [Shown as locality 21 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 10'03" N., 152 deg. 42'31" W.][Imlay, 1964, p. B22 provides following description: "R.W. Imlay and D.J. Miller, 1948. Same geographical location as 21261. Red Glacier Formation. Float from 480 to 515 ft below top of formation."]
Sonninia (Papilliceras) cf. S.(P.) arenata Quenstedt
Lissoceras sp.
Otoites cf. O. contractus (Sowerby)
Emileia constricta Imlay, n. sp.
Stemmatoceras n. sp. undet.
Stemmatoceras? sp.
917g of Stanton, Martin, et al., 1904 (Mesozoic loc. 3007) , Kenai , Snug Harbor. Talus at same locaction as 3006. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Talus from same locality as 3006. T.W. Stanton, 1904."][Imlay, 1964, p. B22 provides following description: "T.W. Stanton, 1904. Tuxedni Bay area, 1.2 miles west of Fossil Point. Red Glacier Formation. Float about 450 ft below top of formation."]
Holcophylloceras sp. juv.
917h of Stanton, Martin, et al., 1904 (Mesozoic loc. 3008) , Kenai , Snug Harbor. No. 111 of section. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Upper part of bed 32. T.W. Stanton, 1904."][Imlay, 1964, p. B22 provides following description: "T.W. Stanton, 1904. Tuxedni Bay area, 1.22 miles west of Fossil Point. Red Glacier Formation, about 475 ft below top."]
Sonninia? sp. juv.
Witchellia? sp.
917d of Stanton, Martin, et al., 1904 (Mesozoic loc. 3004) , Kenai , Snug Harbor. Talus probably from higher than 917a. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Talus just east of outcrop of bed 29, probably from a higher horizon than 3001. T.W. Stanton, 1904."][Imlay, 1964, p. B22 provides following description: "T.W. Stanton, 1904. Tuxedni Bay area, 0.96 mile west of Fossil Point. Red Glacier Formation. Float on beach 250-300 ft below top of formation."]
Witchellia? sp.
48AI59 (Mesozoic loc. 21264) , Kenai , [Shown as locality 14 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'55" N., 152 deg. 41'58" W.][Imlay, 1964, p. B22 provides following description: "R.W. Imlay and D.J. Miller, 1964. Tuxedni Bay area, 3,650 ft S. 80 deg. W. of Fossil Point. Red Glacier Formation. Massive gray siltstone 250 ft below top of formation and from base of unit 23 of section by Stanton and Martin."]
Stephanoceras (Skirroceras) kirschneri Imlay, n. sp.
48AI60 (Mesozoic loc. 21265) , Kenai , [Shown as locality 14 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'55" N., 152 deg. 41'58" W.][Imlay, 1964, p. B22 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 3,500 ft S. 86 deg. W. of Fossil Point. Red Glacier Formation, 215 ft below top in massive gray siltstone."]
Macrophylloceras cf. M. sp. undet. A
48AI61 (Mesozoic loc. 21266) , Kenai , [Shown as locality 11 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'55" N., 152 deg. 41'54" W.][Imlay, 1964, p. B22 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 3,250 ft. S. 85 deg. W. of Fossil Point. Red Glacier Formation, 200 ft below top in massive gray siltstone."]
Sonninia tuxedniensis Imlay, n. sp.
917n of Stanton, Martin, et al., 1904 (Mesozoic loc. 3013) , Kenai , Snug Harbor. No. 101 of section. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Upper member (clay shale) of bed 22. T.W. Stanton, 1904."][Imlay, 1964, p. B22 provides following description: "T.W. Stanton, 1904. Tuxedni Bay area, 1.0 mile west of Fossil Point. Red Glacier Formation, upper 50 ft."]
Stephanoceras (Skirroceras) kirschneri Imlay, n. sp.
48AI62 (Mesozoic loc. 21267) , Kenai , [Shown as locality 11 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'55" N., 152 deg. 41'54" W.][Imlay, 1964, p. B22 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 3,075 ft S. 84 deg. W. of Fossil Point. Red Glacier Formation, 170 ft below top in massive gray siltstone."]
Holcophylloceras cf. H. costisparsum Imlay, n. sp.
Sonninia? sp. juv.
Stephanoceras (Skirroceras) kirschneri Imlay, n. sp.
48AI63 (Mesozoic loc. 21268) , Kenai , [Shown as locality 9 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'54" N., 152 deg. 41'49" W.][Imlay, 1964, p. B22 provides following description: "Tuxedni Bay area, 3,250-3,500 ft S. 85 deg. - 86 deg. W. of Fossil Point. Red Glacier Formation. Float from 100 to 230 ft below top of formation."]
Sonninia tuxedniensis Imlay, n. sp.
Strigoceras sp. juv.
Lissoceras cf. L. semicostulatum Buckman
Emileia constricta Imlay, n. sp.
Stephanoceras (Skirroceras) kirschneri Imlay, n. sp.
48AI64 (Mesozoic loc. 21269) , Kenai , [Shown as locality 4 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'53" N., 152 deg. 41'42" W.][Imlay, 1964, p. B23 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 2,800 ft S. 86 deg. W. of Fossil Point. Red Glacier Formation, about 95 ft below top in massive gray siltstone."][Entry in USGS Mesozoic Fossil Locality register (Washington, D.C.) provides following description: "Orig. no. 48AI64. Middle Jurassic - Tuxedni Formation. Same geographical location as no. 21261. South Shore of Tuxedni Bay. 2,800 ft. S 76 deg. W of Fossil Point. From massive gray siltstone near base of unit. No. 22 of Stanton & Martin section. July 28, 1948."]
Stephanoceras cf. S. nodosum (Quenstedt)
Stemmatoceras n. sp. undet.
52AJuN5 (Mesozoic loc. 24333) , Kenai , [Shown as locality 37 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'08" N., 152 deg. 49'28" W.][Imlay, 1964, p. B23 provides following description: "Werner Juhle, 1952. Tuxedni Bay area, on ridge top between Difficult Creek and Hungryman Creek 4.8 miles S. 79 deg. W. of Fossil Point. Red Glacier Formation, 1,800-1,900 ft below top."]
Stephanoceras (Skirroceras) juhlei Imlay, n. sp.
52AJu-F15 (Mesozoic loc. 24334) , Kenai , [Shown as locality 34 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 07'52" N., 152 deg. 51'27" W.][Imlay, 1964, p. B23 provides following description: "Werner Juhle, 1952. Tuxedni Bay area, on a ridge south of the headwaters of Hungryman Creek, 5.5 miles S. 78 deg. W. of the mouth of Hungryman Creek. Red Glacier Formation, 1,700-1,800 ft below top."]
Emileia cf. E. constricta Imlay, n. sp.
51AHa11a, b, c (Mesozoic loc. 22723) , Kenai , Cub Creek about one mile upstream from junction with Bear Creek at a point 2 1/4 miles from Tuxedni Bay. Lot 51AHa 11 bb, collected 50 yards downstream, and lot 51AHa11c, collected 200 yards downstream from lot 51AHa11a. (description from E&R report of Imlay dated Dec. 20, 1951; Shipment AF-51-42)[Transmittal sheet of Hartsock, dated Nov. 30, 1951 provides further details: "11a: Traverse point 69H on Cub Creek about one mile up stream from intersection with Bear Creek. Ammonite collected from very fine-grained sandstone, probably Fitz Creek formation of Mid Jurassic age."; 11b: "Ammonite from approximately same horizon as 51AHa11a. Locality 50 yards downstream from traverse point 69H on Cub Creek. Probably Fitz Creek formation."; 11c: "Two hundred yards downstream from 69H. Ammonite collected from siltstone, probably Fitz Creek formation."][Shown as locality 45 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 07'14" N., 152 deg. 45'13" W.][Imlay, 1964, p. B23 provides following description: "J.K. Hartsock, 1951. Tuxedni Bay area. Near Bear Creek about 3 miles S. 62 deg. W. of mouth of Bear Creek. Gaikema Sandstone. From gray sandy shale in lower 150 ft."]
Sonninia (Papilliceras) cf. S.(P.) arenata Quenstedt
Lissoceras sp.
Emileia constricta Imlay, n. sp.
916e of Stanton, Martin, et al., 1904 (Mesozoic loc. 2999) , Kenai , Snug Harbor. Talus probably from Nos. 11 to 14 of section. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Talus, probably mostly from beds 11 to 14. T.W. Stanton, 1904."][Imlay, 1964, p. B23 provides following description: "T.W. Stanton, G.C. Martin, and Andrew Brown, 1904. Tuxedni Bay area, 2,500 ft west of Fossil Point. Fitz Creek Siltstone. Float from 100 to 150 ft below top."]
Macrophylloceras sp. undet. B
Holcophylloceras costisparsum Imlay, n. sp.
Sonninia tuxedniensis Imlay, n. sp.
Lissoceras sp.
Chondroceras defontii (McLearn)
Normannites (Itinsaites) crickmayi (McLearn)
Normannites (Itinsaites) itinsae (McLearn)
Stephanoceras (Skirroceras) kirschneri Imlay, n. sp.
Teloceras itinsae McLearn
Zemistephanus richardsoni (Whiteaves)
Zemistephanus carlottensis (Whiteaves)
916f of Stanton, Martin, et al., 1904 (Mesozoic loc. 3000) , Kenai , Snug Harbor near base of 1st section on mainland. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Concretions in bed 19. T.W. Stanton, 1904."][Imlay, 1964, p. B23 provides following description: "T.W. Stanton, 1904. Tuxedni Bay area, 3,000 ft west of Fossil Point. Fitz Creek Siltstone 150 ft below top."]
Holcophylloceras costisparsum Imlay, n. sp.
Sonninia tuxedniensis Imlay, n. sp.
Lissoceras sp.
Oppelia stantoni Imlay, n. sp.
Chondroceras defontii (McLearn)
Normannites (Itinsaites) crickmayi (McLearn)
Teloceras itinsae McLearn
Zemistephanus richardsoni (Whiteaves)
Zemistephanus carlottensis (Whiteaves)
B (Mesozoic loc. 10245) , Kenai , C.N. Fenner, 1919. Tuxedni Bay area, south shore west of Fossil Point. Fitz Creek Siltstone. (description from Imlay, 1964, p. B12)
Chondroceras defontii (McLearn)
Stemmatoceras sp. juv.
Zemistephanus richardsoni (Whiteaves)
20-AM-10 (Mesozoic loc. 10520) , Kenai , F.H. Moffit, 1920. Tuxedni Bay area, 3,000 ft west of Fossil Point. Fitz Creek Siltstone, 150 ft below top. (description from Imlay, 1964, p. B23)
Zemistephanus richardsoni (Whiteaves)
46AKr33 (Mesozoic loc. 20756) , Kenai , C.E. Kirschner, 1946. Tuxedni Bay area, south shore west of Fossil Point. Float from both Fitz Creek Silstone and Cynthia Falls Sandstone. (description from Imlay, 1964, p. B23)
Sonninia? sp. juv.
Chondroceras defontii (McLearn)
Normannites (Itinsaites) crickmayi (McLearn)
Stephanoceras (Skirroceras) kirschneri Imlay, n. sp.
Zemistephanus richardsoni (Whiteaves)
48AI65 (Mesozoic loc. 21270) , Kenai , [Shown as locality 85 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'54" N., 152 deg. 41'33" W.][Imlay, 1964, p. B23 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 0.52 mile N. 87 deg. W. of Fossil Point. Fitz Creek Siltstone. From silty sandstone 150 ft below top. Same as unit 19 of section by Stanton and Martin."]
Holcophylloceras costisparsum Imlay, n. sp.
Chondroceras defontii (McLearn)
Normannites (Itinsaites) crickmayi (McLearn)
Stemmatoceras cf. S. palliseri (McLearn)
Teloceras itinsae McLearn
Zemistephanus richardsoni (Whiteaves)
No Data (Mesozoic loc. 26953) , Kenai , E.R. Orwig, 1957. Tuxedni Bay area, south shore west of Fossil Point. Fitz Creek Siltstone. (description from Imlay, 1964, P. B23)
Chondroceras defontii (McLearn)
Teloceras aff. T. itinsae McLearn
916c of Stanton, Martin, et al., 1904 (Mesozoic loc. 2997) , Kenai , No. 11 of section. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Bed 11. T.W. Stanton, 1904."][Imlay, 1964, p. B23 provides following description: "T.W. Stanton, G.C. Martin, and Andrew Brown, 1904. Tuxedni Bay area, 1,500 ft west of Fossil Point. Fitz Creek Siltstone, sandy limestone 75 ft below top."]
Normannites (Itinsaites) crickmayi (McLearn)
Normannites (Itinsaites) itinsae (McLearn)
916d of Stanton, Martin, et al., 1904 (Mesozoic loc. 2998) , Kenai , Snug Harbor on mainland No. 14 of section. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Bed 14. T.W. Stanton, 1904."][Imlay, 1964, p. B23 provides following description: "T.W. Stanton, G.C. Martin, and Andrew Brown, 1904. Tuxedni Bay area, 2,000 ft west of Fossil Point. Fitz Creek Siltstone, siltstone and sandstone 100 ft below top."]
Normannites sp.
Teloceras itinsae McLearn
Zemistephanus richardsoni (Whiteaves)
Zemistephanus carlottensis (Whiteaves)
20AM-4 (Mesozoic loc. 10515) , Kenai , F.H. Moffit, 1920. Tuxedni Bay area, 0.32 mile west of Fossil Point. Fitz Creek Siltstone, 100 ft below top.
Macrophylloceras sp. undet. A
Chondroceras defontii (McLearn)
Zemistephanus richardsoni (Whiteaves)
20-AI-5 (Mesozoic loc. 10516) , Kenai , Herbert Insley, 1920. Tuxedni Bay area, 0.28 mile west of Fossil Point. Fitz Creek Siltstone, 75 ft below top. (description from Imlay, 1964, p. B23)
Chondroceras defontii (McLearn)
48AI66 (Mesozoic loc. 21271) , Kenai , [Shown as locality 90 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'56" N., 152 deg. 41'25" W.][Imlay, 1964, p. B23 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 0.40 mile N. 87 deg. W. of Fossil Point. Fitz Creek Siltstone, from silty sandstone, 100 ft below top. Same as unit 14 of section by Stanton and Martin."]
Lissoceras sp.
Chondroceras defontii (McLearn)
Normannites (Itinsaites) crickmayi (McLearn)
Normannites (Itinsaites) cf. (I.) itinsae (McLearn)
Zemistephanus richardsoni (Whiteaves)
48AI73 (Mesozoic loc. 21274) , Kenai , [Shown as locality 90 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'56" N., 152 deg. 41'25" W.][Imlay, 1964, p. B23 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 0.40 mile N. 87 deg. W. of Fossil Point. Fitz Creek Siltstone, from silty sandstone, 100 ft below top."]
Normannites sp.
Stephanoceras (Skirroceras) kirschneri Imlay, n. sp.
Zemistephanus richardsoni (Whiteaves)
48AI74 (Mesozoic loc. 21275) , Kenai , [Shown as locality 93 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 09'59" N., 152 deg. 41'12" W.] ][Imlay, 1964, p. B23 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 0.3 mile N. 87 deg. W. of Fossil Point. Fitz Creek Siltstone, from silty sandstone, 75 ft below top."]
Chondroceras defontii (McLearn)
Normannites (Itinsaites) crickmayi (McLearn)
Teloceras itinsae McLearn
Zemistephanus carlottensis (Whiteaves)
916b of Stanton, Martin, et al., 1904 (Mesozoic loc. 2996) , Kenai , No. 7 of section [Note by RBB: Martin, 1926, USGS Bull. 776, p. 154 states: "South shore of Tuxedni Bay. Base of Bed 7. T.W. Stanton, 1904."][Imlay, 1964, p. B23 provides following description: "T.W. Stanton, G.C. Martin, and Andrew Brown, 1904. Tuxedni Bay area, about 1,300 ft west of Fossil Point. Fitz Creek Siltstone, 25 ft below top."]
Chondroceras cf. C. defontii (McLearn)
48AI175 (Mesozoic loc. 21276) , Kenai , [Shown as locality 96 on Pl. 3 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 10'00" N., 152 deg. 41'08" W.][Imlay, 1964, p. B23 provides following description: "R.W. Imlay and D.J. Miller, 1948. Tuxedni Bay area, 0.25 miles N. 87 deg. W. of Fossil Point, Fitz Creek Siltstone, from silty sandstone, 25-60 ft below top. Same as unit 8 of section by Stanton and Martin."]
Chondroceras defontii (McLearn)
Chondroceras cf. C. allani (McLearn)
51AHa9 (Mesozoic loc. 22721) , Kenai , About half a mile below head of a tributary of Bear Creek which joins Bear Creek at a point 2.53 miles from Tuxedni Bay. (description from E&R report of Imlay dated Dec. 20, 1951; Shipment AF-51-42)[Transmittal sheet of Hartsock, dated Nov. 30, 1951 provides further details: "One hundred yards upstream from traverse point 64H on Bear Creek, south side of Tuxedni Bay, about 1/2 mile below head of stream. Ammonite collected in siltstone believed to belong to Bowser formation."][Shown as locality 66 of Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 60 deg. 05'57" N., 152 deg. 45'13" W.][Imlay, 1964, p. B23 provides following description: "J.K. Hartsock, 1951. Tuxedni Bay area. On tributary of Bear Creek, 3.56 miles S. 38 deg. W. of mouth of Bear Creek. Fitz Creek Siltstone, 150 ft above base."]
Oppelia stantoni Imlay, n. sp.