Rock Creek cold seep (Eocene of the United States)

Also known as UCMP IP 16630, UCMP IP 16631, UCMP IP 16632, UCMP IP 16633, UCMP IP 16634, UCMP IP 16642, UCMP IP 16679

Where: Columbia County, Oregon (45.9° N, 123.3° W: paleocoordinates 46.2° N, 111.0° W)

• coordinate estimated from map

When: middle Member (Keasey Formation), Priabonian (38.0 - 33.9 Ma)

• within the middle member of the Keasey Formation

Environment/lithology: deep-water; mudstone and carbonate

• methane seep

Size classes: macrofossils, mesofossils, microfossils

Primary reference: D. G. Taylor, C. S. Hickman, E. A. Nesbitt, K. A. Campbell, and R. A. Martin. 2023. A methane seep from the deep-marine, late Eocene Keasey Formation, Rock Creek, Columbia County, Oregon. PaleoBios 40(16):1-29 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 233549: authorized by Mark Uhen, entered by Mark Uhen on 13.02.2024

Creative Commons license: CC BY (attribution)

Taxonomic list

Scaphopoda
 Gadilida - Gadilidae
Cadulus sp. Philippi 1844 tusk shell
n. sp.
 Dentaliida - Dentaliidae
Fissidentalium cf. laneensis Hickman 1969 tusk shell
Bivalvia
 Lucinida - Thyasiridae
Conchocele taylori Hickman 2015 clam
? Conchocele bathyaulax Hickman 2015 clam
 Cardiida - Cardiidae
Anechinocardium weaveri Anderson and Martin 1914 cockle
 Cardiida - Tellinidae
? Moerella quasimacoma Hickman 2015 tellin clam
 Cardiida - Veneridae
? Lamelliconcha clarki Dickerson 1917 venus clam
 Pectinida - Pectinoidae
 Solemyida - Solemyidae
"Acharax dalli" = Solemya (Acharax) dalli
"Acharax dalli" = Solemya (Acharax) dalli Clark 1925 Awning Clam
 Nuculida - Nuculidae
Acila cf. minima divaricate nutclam
 Nuculanida - Nuculanidae
Nuculanidae indet. Adams and Adams 1858 pointed nut clam
sp. a & b
"Nuculana washingtonensis" = Nuculana (Saccella) washingtonensis Weaver 1916 pointed nut clam
? Propeleda sp. Iredale 1924 pointed nut clam
 Nuculanida - Yoldiidae
Yoldiidae indet. Habe 1977 clam
 Nuculanida - Sareptidae
Portlandia chehalisensis Arnold 1908 clam
Gastropoda
 Neogastropoda - Cancellariidae
? Bonellitia sp. Jousseaume 1887 snail
 Neogastropoda - Turridae
Turridae indet. Swainson 1840 turrid
spp. a, b, c
Procerapex bentsonae Durham 1944 turrid
 Neogastropoda - Ptychatractidae
Exilia bentsonae Hickman 1980 snail
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
 Epitonioidea - Epitoniidae
Epitonium (Boreoscala) condoni Dall 1909 wentletrap
 Opisthobranchia - Cylichnidae