"Bellefontia Fauna," Stonehenge Ls. zones A-D, L.Ord. (Ordovician of the United States)

Where: Maryland (39.6° N, 77.8° W: paleocoordinates 31.6° S, 70.3° W)

• coordinate based on political unit

When: Stonehenge Limestone Formation, Canadian (485.4 - 468.1 Ma)

• "Zones A-D. Lower Canadian"

Environment/lithology: peritidal; limestone

• "thin-bedded and stromatolitic ls. very shallow subtidal to intertidal (BA1). ocean facing stable shelf"

Size class: macrofossils

Primary reference: W. J. Sando. 1957. Beekmantown Group (Lower Ordovician) of Maryland. Geological Society of America Memoir 68:1-159 [P. Wagner/P. Wagner/J. Ju]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 274: authorized by Jack Sepkoski, entered by Mike Sommers on 21.03.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• "W.J.Sando, 1957. Beekmantown Group (Lower Ord.) of Maryland. GSA Mem.68 159p."
 Aulacopleurida - Hystricuridae
Psalikilus sp. Ross 1951 trilobite
Hystricurus sp. Raymond 1913 trilobite
 Asaphida - Asaphidae
 Pentamerida - Tetralobulidae
Tetralobula sp. Ulrich and Cooper 1936
 Orthida - Finkelnburgiidae
Finkelnburgia sp. Walcott 1905
 Lingulida - Obolidae
? Obolus sp. Eichwald 1829
originally entered as "? Obolus sp."
 Ribeirioida - Technophoridae
Ribeiria sp. Sharpe 1853
 Eogastropoda - Sinuopeidae
Gasconadia putilla Sardeson 1896 snail
 Ellesmerocerida - Ellesmeroceratidae
Ellesmeroceras sp. Foerste 1921
Dakeoceras sp. Ulrich and Foerste 1931