Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Mississippian
Kinds of fossils: Marine invertebrates
Quadrangle or area: Point Hope A-2, northwestern Alaska
Shipment No.: A-60-1
Referred by: Campbell, Russell H.
Report prepared by: Dutro, J. Thomas, Jr. , Duncan, Helen
Date: 11/15/1961

This report covers 16 collections, about 250 specimens, from units correlated with the two measured sections, discussed in another report (dated 10/19/1961).

In general, the sequence of faunas is consistent with those found in the measured sections. All collections from unit Ml4 can be correlated with the upper Alapah faunas. Collections 133, 147 and 59ACu15 represent the "Chester"-type assemblage, also found in collection 55 of the measured section. It would appear that 59ACu15 may be correlated too high in the unit.

Collection 138 seems to be out of place. The distinctive Spirifer that occurs in abundance in this collection is found in the central Brooks Range in rocks of Wachsmuth age.

The group of collections that were listed as either Ml3 or Ml1 probably should be assigned to Ml1. The fossil assemblage of 59ACr 19-20 is very like that of 119 which characterizes Ml1 in the measured section.

Collection 15 contains a Wachsmuth age assemblage and therefore contributes evidence for the Wachsmuth equivalence of unit Ml2. In the measured sequence, Ml2 did not contain definitive fossils but was bracketed by upper Wachsmuth fossil assemblages in Ml1 and lower Ml3.

Collections 162 and 154 present a problem. The corals in these collections suggest a higher position in the section than indicated on the transmittal sheets. Faberophyllum? was found in collection 27 and may tie that collection to 162. On the other hand, the brachiopods suggest a lower correlation. Collection 154 may correlate with the levels of collections 8 or 1 in the measured section. These two collections (162 and 154) seem to have been collected at the place where I made extensive collections and measured a section in 1951. It was my opinion, at the time, that the sequence in that area should be correlated much higher (perhaps with your unit Ml4). The coral-bearing beds are overlain by quite a thickness of dolomites. What I consider good evidence of faulting would explain the juxtaposition over beds equivalent to your Ml1.

In this report we have labeled the larger animal groups where any confusion might exist. In this, as well as earlier reports, the fossils are listed in systematic order.


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Brief statement of problem and remarks (from collector):
Samples represent units correlated with measured section at beach as indicated on attached columnar section. 1) Does fossil evidence cast any serious doubt on field correlation? 2) Are any fossils sufficiently diagnostic to mark individual stratigraphic horizons within the thicker Lisburne units? 3) As field correlations generally appear correct, these fossils may add to completeness of fauna collected from measured sections.

User Note module to be added
59ACu15f (19060-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 07.8'N, Long. 165 deg. 51.2'W. Coordinates (8.95, 8.90)" (see attached columnar section for stratigraphic position)]
echinoderm debris, indet.
Archimedes sp.
fenestrate bryozoans, indet.
brachiopod fragments, indet.
59ACr171f (19059-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 06.0'N, Long. 165 deg. 48.0'W. Coordinates (10.30, 7.00)" (see attached columnar section for stratigraphic position)]
coral, indet. (form suggests phaceloid lithostrotionoid)
59ACr147f (19058-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 13.6'N, Long. 165 deg. 46.5'W. Coordinates (10.90, 15.7)" (see attached columnar section for stratigraphic position)]
echinoderm debris
Zaphrentites? sp.
Echinoconchus sp.
Cleiothyridina sp.
Composita sp.
Eumetria? sp.
brachiopod fragments, indet.
59ACr85f (19057-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 07.0'N, Long. 165 deg. 51.6'W. Coordinates (8.80, 8.10)" (see attached columnar section for stratigraphic position)]
Amplexizaphrentis sp.
59ACr133f (19056-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 08.4'N, Long. 165 deg. 56.4'W. Coordinates (6.80, 9.70)" (see attached columnar section for stratigraphic position)]
stenoporoid bryozoan (ramose form)
59ACr78f (19055-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 06.4'N, Long. 165 deg. 48.9'W. Coordinates (9.95, 7.35)" (see attached columnar section for stratigraphic position)]
Lithostrotionella sp.
59ACr138f (19054-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 09.1'N, Long. 165 deg. 57.8'W. Coordinates (6.10, 10.45)" (see attached columnar section for stratigraphic position)]
Pentremites sp.
Spirifer sp. (wide-like Wachsmuth form-abundant)
Eumetria? sp.
59ACr18f , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 06.3'N, Long. 165 deg. 49.5'W. Coordinates (9.60, 7.30)" (see attached columnar section for stratigraphic position)]
59ACr19-20f (19054-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 06.3'N, Long. 165 deg. 49.45'W. Coordinates (9.62, 7.30)" (see attached columnar section for stratigraphic position)]
Michelinia sp.
zaphrentoid coral, genus indet.
caninoid coral, indet.
Fenestella sp. indet.
"Buxtonia" sp.
Spirifer sp.
Brachythyris aff. B. suborbicularis (Hall)
Cleiothyridina aff. C. obmaxima (McChesney)
Punctospirifer sp.
Syringothyris? sp.
pelecypod fragment, indet.
59ACr21f (19052-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 06.3'N, Long. 165 deg. 49.4'W. Coordinates (9.65, 7.37)" (see attached columnar section for stratigraphic position)]
echinoderm debris, indet.
fenestrate bryozoa
59ACr151f , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 12.8'N, Long. 165 deg. 51.8'W. Coordinates (8.70, 14.70)" (see attached columnar section for stratigraphic position)]
59ACr96f (19051-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 08.0'N, Long. 165 deg. 56.7'W. Coordinates (6.60, 9.20)" (see attached columnar section for stratigraphic position)]
echinoderm debris, indet.
trepostomatous bryozoans, ramose and lamellar
stenoporoid bryozoans, ramose and incrustings
fenestrate bryozoans, indet.
Cystodictya sp.
Rhabdomeson sp.
rhynchonelloid brachiopod, indet.
59ACr162f (18999-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 12.5'N, Long. 166 deg. 00.3'W. Coordinates (5.05, 14.45)" (see attached columnar section for stratigraphic position)]
Platyceras sp.
Faberophyllum sp.
Fistulipora sp.
Echinoconchus sp.
Spirifer sp.
Brachythyris aff. B. suborbicularis (Hall)
59ACr154f (18998-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 11.6'N, Long. 165 deg. 59.5'W. Coordinates (5.40, 13.35)" (see attached columnar section for stratigraphic position)]
Caninia sp. (large form)
pelmatozoan columnals, indet.
fenestellid bryozoans, indet.
59ACr15f (18997-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 06.4'N, Long. 165 deg. 49.8'W. Coordinates (9.55, 7.35)" (see attached columnar section for stratigraphic position)]
echinoderm debris, indet.
stenoporoid bryozoan, ramose form
Fenestella sp. indet.
Cystodictya sp. indet.
Schizophoria sp.
Spirifer sp.
59ACr16f (18996-PC) , Point Hope , No description given in Dutro and Duncan E&R report of 11/15/61 of Shipment A-60-1 [Transmittal form of R.H. Campbell, dated Dec. 2, 1959 gives following data: "Lat. 68 deg. 06.4'N, Long. 165 deg. 49.7'W. Coordinates (9.57, 7.34)" (see attached columnar section for stratigraphic position)]
Zaphrentites sp. (very large form)