Thompson Cove, Gravina Island (Triassic of the United States)

Also known as 15 ACh 121

Where: Alaska (55.2° N, 131.8° W: paleocoordinates 0.1° S, 70.9° W)

• coordinate based on nearby landmark

When: Late/Upper Triassic (237.0 - 201.4 Ma)

Environment/lithology: lithified limestone

Size class: macrofossils

Collected by T. Chapin in 1915

Primary reference: A. F. Buddington and T. Chapin. 1929. Geology and mineral deposits of southeastern Alaska. United States Geological Survey Bulletin 800:1-398 [A. Miller/S. Kolbe]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 112239: authorized by Arnold Miller, entered by Sarah Kolbe on 07.07.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• Identified by T.W. Stanton.
Show authors, comments, and common names
Echinoidea
  -
Echinoidea indet.
Echinoidea indet. Leske 1778 sea urchin
Crinoidea
 Isocrinida - Pentacrinitidae
Pentacrinus sp.
Pentacrinus sp. Miller 1821 Sea lily
 Isocrinida - Isocrinidae
Isocrinus gravinse
Gastropoda
 Cerithioidea - Turritellidae
? Turritella sp.
? Turritella sp. Lamarck 1799 turret shell
Bivalvia
 Solemyida - Solemyidae
? Solemya sp.
? Solemya sp. Children 1823 Awning Clam
 Ostreida - Ostreidae
? Ostrea sp.
? Ostrea sp. Linnaeus 1758 oyster
Rhynchonellata
 Spiriferinida - Spiriferinidae
? Spiriferina sp.
? Spiriferina sp. d'Orbigny 1847
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834