USGS 10097, Nehenta Bay, Gravina Island (Triassic of the United States)

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lacian (221.5 - 215.6 Ma)

Environment/lithology: lithified limestone and lithified shale

Size class: macrofossils

Collected by E.M. Kirk

Primary reference: J. P. Smith. 1927. Upper Triassic marine invertebrate faunas of North America. United States Geological Survey Professional Paper 141:1-262 [D. Bottjer/C. Powers/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 112337: authorized by Arnold Miller, entered by Sarah Kolbe on 09.07.2011, edited by Catherine Powers

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Scleractinia - Fungiidae
"Halomitra" triadica Smith 1927 stony coral
 Scleractinia - Latomeandridae
"Latimaeandra" alaskana Smith 1927 stony coral
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Bivalvia
 Arcida - Parallelodontidae
""Macrodon" sp." = Parallelodon
""Macrodon" sp." = Parallelodon Meek and Worthen 1866 clam