Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Pennsylvanian-Lower Permian
Kinds of fossils: Brachiopods
Quadrangle or area: Port Alexander and Petersburg quads., Alaska
Shipment No.: A-80-17
Referred by: Brew, David A.
Report prepared by: Dutro, J. Thomas, Jr.
Date: 03/09/1983

This report covers the 9 collections in this shipment containing Carboniferous and Permian megafossils. Six of these collections are Early Permian, one is Pennsylvanian and two are possibly Carboniferous. The most significant collection is 80SK500B (USGS 27714-PC) from Muffler's crinoidal limestone (Cl). This collection has many more kinds of fossils than similar old collections and is definitely of Pennsylvanian age. Of the Muffler collections from the same unit, I can now say that 63AMp590 is possibly so, although it has very few fossils in it. Consequently, this unit is correlative to the Klawak or Ladrones Limestones of Prince of Wales Island, and possibly also with the chert and limestone member and part of the silty limestone member of the Saginaw Bay Formation. Muffler's collection 63AMp343 is also Pennsylvanian. As other collections from the silty limestone member contain probable early Permian fusulinids, that member is Pennsylvanian and early Permian in age. Fusulinids from the Halleck Formation are late Wolfcampian, according to R.C.Douglass (see his report dated 12/29/80). The Permian Pybus Formation collections in this shipment contain brachiopods faunas that are Leonardian. Consequently, all the current evidence indicates that the Halleck and Pybus Formations are Lower Permian.

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80EK107 (27118-PC) , Petersburg , From sec. 19, T. 57 S., R. 74 E., Petersburg D-6 quad., logging road borrow pit SE of lake, Kupreanof Island, Pybus Formation, submitted as Permian (Leonard?). Partly dolomitic chert-bearing limestone of Pybus Formation; more than 30 m above base of Pybus Formation.
echinoderm debris, indet.
fenestrate bryozoans, indet.
stenoporoid bryozoans, indet.
productoid fragments, indet.
Spiriferella sp. (large)
Hustedia? sp.
Reticulariina? sp.
80SK500B (27714-PC) , Port Alexander , From Muffler's crinoidal limestone (Cl). Collector: Susan M. Karl, 1980.
horn coral, indet.
fenestrate bryozoans, indet.
Schizophoria cf. S. resupinoides (Cox)
Neochonetes sp.
Plicochonetes? sp.
Linoproductus sp.
Antiquatonia? sp.
dictyoclostid, undet.
Kozlowskia? sp.
marginiferid, undet.
rhynchonelloid fragments, indet.
Anthracospirifer sp.
Neospirifer sp.
brachythyrid, indet.
martinoid, indet.
Phricodothyris cf. P. perplexa (Morton)
Composita sp.
pectenoid pelecypod fragments, indet.
Streblopteria? sp.
proetid trilobite pygidium, indet.
80EK076D (28838-PC) , Port Alexander , 1 3/4 miles east of VABM Corn on Cornwallis Peninsula, Kuiu Island; brachiopods in sandy matrix of 2 m conglomerate and sandstone bed in midst of limestone turbidites (Cornwallis Limestone of Muffler, 1967). Collector: I. Ellersieck, 1980.
Spiriferella sp.
Septacamera stupenda Grant
80SH54D (27716--PC) , Port Alexander , Outcrop on beach, 1/2 mile S. of cannery on west side of Cornwallis Peninsula (eastern shore of Saginaw Bay); from interbedded calcareous mudstones and siltstones mapped as part of Halleck Formation. Collection: Susan J. Hunt, 1980.
fenestrate bryozoans, indet.
Arctitreta sp.
Linoproductus spp.
Waagenoconcha sp.
Cancrinella? sp.
Septacamera? sp.
Choristites sp.
Neospirifer sp.
80SH128B (27717-PC) , Petersburg , Scattered outcrops on top of hill, 1/2 mile S. of Hamilton Creek near its mouth, western side of Kupreanof Island; Pybus Formation. Collector: Susan J. Hunt, 1980.
echinoderm debris, indet.
Spiriferella cf. S. saranae (Verneuil)
80RS098A (27719-PC) , Port Alexander , Northeast Kuiu Island on Kadake Creek, 1.5 miles southwest of head of Kadake Bay; stratigraphic position uncertain. Collector: R.A. Sonnevil, 1980.
stenoporoid bryozoans, indet.
Yakovlevia sp.
dictyoclostid, indet.
Spiriferella sp.
pectenoid pelecypod, undet.
80SK449B (27710-PC) , Port Alexander , From bioherm intercalated with fine grained, thin- to medium-bedded calcareous sand; siltstone limestone member of Saginaw Bay Formation. Collector: S.M. Karl, 1980.
echinodermal debris
fusulinids
fragmentary indeterminate strophomenoid brachiopods
chonetid brachiopods
80SH053F , Port Alexander , Limestone clast in volcanic conglomerate on Sachem Island; mapped as lowermost member of Saginaw Bay Formation. Collector: S.J. Hunt, 1980.
echinodermal debris
Martinia? sp.
indeterminate orthotetaceans
80SH054E , Port Alexander , Outcrop on beach 1/2 mile S. of cannery on W. side of Cornwallis Peninsula; from either a clast or matrix of breccia unit believed to overlie the Halleck Formation. Collector: S.J. Hunt, 1980.
indeterminate pterioid pelecypod valve