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Pterotrigonia evansana

Geological Range

Santonian-Campanian.

Paleogeographic Distribution

British Columbia, Washington, and California.

Remarks

Synonyms: Trigonia evansana Meek, 1864, Trigonia evansii Meek, 1864 [sic], Trigonia bowersiana, and Trigonia churchi

Stratigraphic Occurrences

<i>Pterotrigonia evansana</i> from the Chatsworth Formation of California (LACMIP 10715.160).
Pterotrigonia evansana from the Chatsworth Formation of California (LACMIP 10715.160).
<i>Pterotrigonia evansana</i> from the Williams Formation of California (LACMIP 22415.213).
Pterotrigonia evansana from the Williams Formation of California (LACMIP 22415.213).
<i>Pterotrigonia evansana</i> from the Williams Formation of California (LACMIP 22415.213).
Pterotrigonia evansana from the Williams Formation of California (LACMIP 22415.213).