Ambonychia-Modiolopsis community, Lorraine Group, no formation name, north-centr (Ordovician of the United States)

Where: New York (43.1° N, 75.0° W: paleocoordinates 27.0° S, 51.1° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Lorraine Group, Late/Upper Ordovician (458.4 - 443.8 Ma)

• "U. Ord. (post-Trenton)"

Environment/lithology: transition zone or lower shoreface; sandstone

• "medium to coarse sandstone (terrigenous). shallow infralittoral to intertidal. shallower than Nuculites-Colpon[illeg] community. craton. tectonic highland to E"

Size class: macrofossils

Primary reference: P. W. Bretsky. 1970. Late Ordovician benthic communities in north-central New York. New York State Museum and Science Service Bulletin 414:1-34 [P. Novack-Gottshall/P. Hearn/J. Ju]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 346: authorized by Jack Sepkoski, entered by Mike Sommers on 23.03.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Bretsky 1970. NY State Mus. Bull. 414"
Show authors, comments, and common names
Stenolaemata
 Trepostomata - Heterotrypidae
? Dekayia sp.
? Dekayia sp. Milne-Edwards and Haime 1851
originally entered as "? Dekayia sp."
Bivalvia
 Cyrtodontida - Cyrtodontidae
Cyrtodonta sp.
Cyrtodonta sp. Billings 1858 clam
 Myalinida - Ambonychiidae
Ambonychia praecursa
 Modiomorphida - Allodesmatidae
Ischyrodonta unionoides
 Modiomorphida - Modiomorphidae
Modiolopsis modiolaris
Modiolopsis modiolaris Conrad 1838 clam
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
orthoconic cephalopods
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtolites ornatus
Cyrtolites ornatus Conrad 1838
Gastropoda
 Murchisoniina - Hormotomidae
Hormotoma gracilis
Hormotoma gracilis Hall 1847 snail
 Murchisoniina - Eotomariidae
Clathrospira subconica
Clathrospira subconica Hall 1847 snail