UCMP A3676 (Oligocene of the United States)

Where: Clallam County, Washington (48.2° N, 124.0° W: paleocoordinates 47.8° N, 114.3° W)

• coordinate estimated from map

When: Twin River Formation, Oligocene (33.9 - 23.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: J. W. Durham. 1944. Megafaunal zones of the Oligocene of northwestern Washington. University of California Publications in Geological Sciences 27:101 -212 [P. Holroyd/E. Orzechowski]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 208168: authorized by Mark Uhen, entered by Mark Uhen on 22.03.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Nuculida - Nuculidae
"Acila gettysburgensis" = Acila (Acila) gettysburgensis
"Acila gettysburgensis" = Acila (Acila) gettysburgensis Regan 1909 divaricate nutclam
 Solemyida - Solemyidae
Solemya dalli
Solemya dalli Clark 1925 Awning Clam
 Lucinida - Lucinidae
Lucina hannibali
 Thraciida - Periplomatidae
Cochlodesma bainbridgensis
 Thraciida - Thraciidae
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides Conrad 1849 clam
 Cardiida - Veneridae
Pitar arnoldi
Pitar arnoldi venus clam
subspecies etheringtoni
 Cardiida - Tellinidae
"Macoma twinensis" = Macoma (Macoma) twinensis
"Macoma twinensis" = Macoma (Macoma) twinensis Clark 1925 tellin clam
Gastropoda
 Neogastropoda - Fasciolariidae
"Priscofusus hannibali" = Fusinus (Priscofusus) hannibali
"Priscofusus hannibali" = Fusinus (Priscofusus) hannibali Clark and Arnold 1923 snail
 Sorbeoconcha - Cassidae
"Echinophoria apta" = Liracassis apta
"Echinophoria apta" = Liracassis apta Tegland 1931 snail
 Heterostropha - Acteonidae
Acteon sp.
Acteon sp. Montfort 1810 snail
Cephalopoda
 Nautilida - Aturiidae
Aturia angustata
Aturia angustata Conrad 1849 nautiloid