Island Mesa Tank, Yavapai County (Devonian of the United States)

Where: Yavapai County, Arizona (34.1° N, 111.9° W: paleocoordinates 25.9° S, 56.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Jerome Member (Martin Formation), Frasnian (382.7 - 372.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: gray, argillaceous limestone

• 8’ of massive arenaceous purplish-gray limestone ~125’ below Redwall Ls. (Mississippian).

Size class: macrofossils

Collection methods: University of Arizona

Primary reference: A. Stoyanow. 1948. Molluscan faunule from Devonian Island Mesa Beds, Arizona. Journal of Paleontology 22(6):783-791 [P. Wagner/P. Wagner/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50029: authorized by Pete Wagner, entered by Pete Wagner on 04.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Megalodontida - Congeriomorphidae
Congeriomorpha andrusovi n. gen. n. sp.
Congeriomorpha andrusovi n. gen. n. sp. Stoyanow 1948 clam
type locality
 Modiomorphida - Tusayanidae
Tusayana cibola n. gen. n. sp.
Tusayana cibola n. gen. n. sp. clam
type locality
Gastropoda
 Euomphalina - Omphalotrochidae
Arastra torquata n. gen. n. sp.
Arastra torquata n. gen. n. sp. Stoyanow 1948 snail
type locality
 Bellerophontida - Bellerophontidae
Aglaoglypta maera Hall 1876 snail
 Murchisoniina - Gosseletinidae
Arizonella allecta n. gen. n. sp.
Arizonella allecta n. gen. n. sp. Stoyanow 1948 snail
type locality