A-840 (Eocene of the United States)

Where: Oregon (43.0° N, 123.9° W: paleocoordinates 47.0° N, 105.0° W)

• coordinate estimated from map

When: Roseburg Formation (Umpqua Group), Ypresian (56.0 - 47.8 Ma)

• originally lower Umpqua Formation

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: F. E. Turner. 1938. Stratigraphy and Mollusca of the Eocene of western Oregon. Geological Society of America Special Paper (10)1-130 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 200797: authorized by Mark Uhen, entered by Mark Uhen on 19.04.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Sorbeoconcha - Naticidae
Polinices (Euspira) nuciformis Gabb 1864 moon snail
 Sorbeoconcha - Ficidae
Ficopsis remondii Gabb 1864 fig shell
subspecies crescentensis
 Trochoidea - Turbinidae
Homalopoma wattsi Dickerson 1916 snail
 Lepetellida - Fissurellidae
"Diadora sp." = Diodora
"Diadora sp." = Diodora Gray 1821 snail
Bivalvia
 Cardiida - Veneridae
"cf. Isocardia tejonensis" = Nitidavenus tejonensis, Pitar uvasana, "Macrocallista (Costacallista) conradiana" = Microcallista (Costacallista) conradiana
"cf. Isocardia tejonensis" = Nitidavenus tejonensis Waring 1914 venus clam
Pitar uvasana Conrad 1855 venus clam
subspecies coquillensis
"Macrocallista (Costacallista) conradiana" = Microcallista (Costacallista) conradiana Gabb 1864 venus clam
subspecies meganosensis
 Cardiida - Cardiidae
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum
"Nemocardium linteum" = Nemocardium (Nemocardium) linteum Conrad 1855 cockle
 Mytilida - Mytilidae
 Arcida - Glycymerididae
"Glycimeris sagittata" = Glycymerita sagittata
"Glycimeris sagittata" = Glycymerita sagittata Gabb 1864 clam