Poul Creek Formation

Poul Creek Formation
Poul Creek Formation
Stratigraphic range: Paleogene
Type	Formation
Location
Region	Alaska
Country	United States

Last updated February 23, 2025

The Poul Creek Formation is a geologic formation in Alaska. It preserves fossils dating back to the Paleogene period.

Fossil content

Color key

Taxon	Reclassified taxon	Taxon falsely reported as present	Dubious taxon or junior synonym	Ichnotaxon	Ootaxon	Morphotaxon

Notes
Uncertain or tentative taxa are in small text; ~~crossed out~~ taxa are discredited.

Mammals

Mammals reported from the Poul Creek Formation
Genus	Species	Presence	Material	Notes	Images
Arktocara ^[1]	A. yakataga	Yakutat City	Incomplete skull (USNM 214830)	A platanistoid dolphin

Crustaceans

Crustaceans reported from the Poul Creek Formation
Genus	Species	Presence	Material	Notes	Images
Branchioplax ^[2]	B. washingtoniana	Bering Lake	One specimen (USNM 431271)	A mathildellid crab
Eumorphocorystes ^[2]	E. naselensis	Kayak Island	Five specimens	A raninid crab
Orbitoplax ^[2]	O. plafkeri	Wingham Island	Eight specimens	A euryplacid crab
Portunites ^[2]	P. alaskensis	Bering Lake Kayak Island	Five specimens	A portunoid crab

Molluscs

Bivalves

Bivalves reported from the Poul Creek Formation
Genus	Species	Presence	Material	Notes	Images
Cardium ^[3]	C. (Ceratoderma) yakatagensis	Yakataga anticline	One specimen	A cardiid
	C. (Laevicardium) alaskensis	Yakataga anticline	Multiple specimens	A cardiid
	C. (Papyridea) brooksi	Yakataga anticline	Multiple specimens	A cardiid
	C. (Serripes?) hamiltonensis	Yakataga anticline	Multiple specimens	A cardiid
Chione ^[3]	C. cf. cryptolineata	Yakataga anticline	One specimen	A venerid
Chione ^[3]	C. securis alaskensis	Yakataga anticline	One specimen	A venerid
Heterodonax ^[3]	H. sp.	Yakataga anticline	One specimen	A psammobiid
Hiatella ^[3]	H. arctica	Yakataga anticline	One specimen	A hiatellid, originally reported as Saxicava pholadis
Leda ^[3]	L. fossa	Yakataga anticline	One specimen	Reassigned to the genus Nuculana
Macoma ^[3]	M. cf. middendorffi	Yakataga anticline	Multiple specimens	A tellinid
Macoma ^[3]	M. cf. secta	Yakataga anticline	Two specimens	A tellinid
Macrocallista ^[3]	M. pittsburgensis	Yakataga anticline	Several specimens	A venerid
Macrocallista ^[3]	M.? rearensis	Yakataga anticline	One specimen	A venerid
Mactra ^[3]	M. (Mactrotoma) californica equilateralis	Yakataga anticline	Multiple specimens	A mactrid
Mya ^[3]	M. salmonensis	Yakataga anticline	Multiple specimens	A myid
Mya ^[3]	M. truncata	Yakataga anticline	One specimen	A myid
Nucula ^[3]	N. (Acila) gettysburgensis alaskensis	Yakataga anticline	Multiple specimens	A nuculid
	N. (Acila) hamiltonensis	Yakataga anticline	Multiple specimens	A nuculid
	N. (Acila) yakatagensis	Yakataga anticline	One specimen	A nuculid
Nuculana ^[3]	N. fossa	Yakataga anticline	One specimen	A nuculanid, originally reported as Leda fossa
Pandora ^[3]	P. (Kennerlia) yakatagensis	Yakataga anticline	Multiple specimens	A pandorid
Panomya ^[3]	P. (Arctica) turgida	Yakataga anticline	Multiple specimens	A hiatellid
Panomya ^[3]	P. sp.	Yakataga anticline	One specimen	A hiatellid
Pecten ^[3]	P. (Patinopecten) yakatagensis	Yakataga anticline	Multiple specimens	A pectinid
Phacoides ^[3]	P. cf. columbianum	Yakataga anticline	Two specimens	A lucinid
Pitaria ^[3]	P. (Katherinella) arnoldi	Yakataga anticline	Multiple specimens	A venerid
Saxicava ^[3]	S. pholadis		One specimen	Junior synonym of Hiatella arctica
Schizothaerus ^[3]	S. nuttallii	Yakataga anticline	Multiple specimens	A mactrid
Schizothaerus ^[3]	S. trapezoides	Yakataga anticline	Two specimens	A mactrid
Spisula ^[3]	S. ramonensis	Yakataga anticline	Several specimens	A mactrid
Tellina ^[3]	T. sp.	Yakataga anticline	Two specimens	A tellinid
Thracia ^[3]	T. schencki	Yakataga anticline	Numerous specimens	A thraciid
Thyasira ^[3]	T. bisecta	Yakataga anticline	Multiple specimens	A thyasirid
Venericardia ^[3]	V. hamiltonensis	Yakataga anticline	Multiple specimens	A carditid
Venericardia ^[3]	V. yakatagensis	Yakataga anticline	Multiple specimens	A carditid
Yoldia ^[3]	Y. indet.	Yakataga anticline	An imperfect cast	A yoldiid

Cephalopods

Cephalopods reported from the Poul Creek Formation
Genus	Species	Presence	Material	Notes	Images
Aturia ^[3]	A. angusta alaskensis	Yakataga anticline	Multiple specimens	A nautiloid

Gastropods

Gastropods reported from the Poul Creek Formation
Genus	Species	Presence	Material	Notes	Images
Argobuccinum ^[3]	A. sp.	Yakataga anticline	Several imperfect specimens	A cymatiid
Bathybembix ^[3]	B. turbonata	Yakataga anticline	Multiple specimens	An eucyclid, originally reported as Turcicula turbonata
Cancellaria ^[3]	C. (Progabbi) alaskensis	Yakataga anticline	Multiple specimens	A cancellariid
Colus ^[3]	C. rearensis	Yakataga anticline	Multiple specimens	A colid
Epitonium ^[3]	E. (Boreoscala) cf. groenlandica	Yakataga anticline	An imperfect specimen	An epitoniid
Fusinus ^[3]	F. cf. hannibali	Yakataga anticline	Multiple specimens	A fasciolariid
Galeodea ^[3]	G. apta	Yakataga anticline	Multiple specimens	A cassid
Haminoea ^[3]	H. sp.	Yakataga anticline	One specimen	A haminoeid
Natica ^[3]	N. (Cryptonatica) sp.	Yakataga anticline	One specimen	A naticid
Neptunea ^[3]	N. aff. tabulatus	Yakataga anticline	Multiple specimens	A buccinid
Polinices ^[3]	P. (Euspira) cf. galianoi	Yakataga anticline	Several specimens	A naticid
Polinices ^[3]	P. (Euspira) ramonensis	Yakataga anticline	Multiple specimens	A naticid
Psephaea ^[3]	P. corrugata	Yakataga anticline	Multiple specimens	A volutid
Scaphander ^[3]	S. alaskensis	Yakataga anticline	One specimen	A scaphandrid
Turcicula ^[3]	T. turbonata	Yakataga anticline	Multiple specimens	Moved to the genus Bathybembix
Turritella ^[3]	T. hamiltonensis	Yakataga anticline	Multiple specimens	A turritellid
	T. cf. porterensis	Yakataga anticline	Numerous specimens	A turritellid
	T. sp.	Yakataga anticline	One specimen	A turritellid

References

↑ Boersma, Alexandra T.; Pyenson, Nicholas D. (2016-08-16). "Arktocara yakataga, a new fossil odontocete (Mammalia, Cetacea) from the Oligocene of Alaska and the antiquity of Platanistoidea". PeerJ. 4: e2321. doi: 10.7717/peerj.2321 . ISSN 2167-8359. PMC 4991871 . PMID 27602287.
1 2 3 4 Tucker, Annette B.; Feldmann, Rodney M. (May 1990). "Fossil decapod crustaceans from the lower Tertiary of the Prince William Sound Region, Gulf of Alaska". Journal of Paleontology. 64 (3): 409–427. doi:10.1017/S0022336000018643. ISSN 0022-3360.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 CLARK, B. L. (1932-09-30). "Fauna of the Poul and Yakataga Formations (Upper Oligocene) of Southern Alaska". GSA Bulletin. 43 (3): 797–846. doi:10.1130/GSAB-43-797. ISSN 0016-7606.

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.

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[1] Boersma, Alexandra T.; Pyenson, Nicholas D. (2016-08-16). "Arktocara yakataga, a new fossil odontocete (Mammalia, Cetacea) from the Oligocene of Alaska and the antiquity of Platanistoidea". PeerJ. 4: e2321. doi: 10.7717/peerj.2321 . ISSN 2167-8359. PMC 4991871 . PMID 27602287.

[:0-2] 1 2 3 4 Tucker, Annette B.; Feldmann, Rodney M. (May 1990). "Fossil decapod crustaceans from the lower Tertiary of the Prince William Sound Region, Gulf of Alaska". Journal of Paleontology. 64 (3): 409–427. doi:10.1017/S0022336000018643. ISSN 0022-3360.

[:1-3] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 CLARK, B. L. (1932-09-30). "Fauna of the Poul and Yakataga Formations (Upper Oligocene) of Southern Alaska". GSA Bulletin. 43 (3): 797–846. doi:10.1130/GSAB-43-797. ISSN 0016-7606.

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