Lower Rockdale Run Fm., "Lecanospira fauna," Canadian (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: lower Member (Rockdale Run Formation), Canadian (485.4 - 457.3 Ma)

• "lower Rockdale run"

Environment/lithology: peritidal; carbonate

• "stromatolitic and associated carbonates. 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 285: authorized by Jack Sepkoski, entered by Mike Sommers on 20.11.1998, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• "W.J.Sando 1957. GSA Mem. 68"
Show authors, comments, and common names
Anthozoa
 Lichenariida - Lichenariidae
Lichenaria sp.
Lichenaria sp. Winchell and Schuchert 1895 tabulate coral
Rhynchonellata
 Orthida - Finkelnburgiidae
Finkelnburgia ? virginica
 Pentamerida - Clarkellidae
Diaphelasma sp., Stichotrophia sp., Syntrophinella sp.
Cephalopoda
 Endocerida - Proterocameroceratidae
Escharendoceras sp., Platysiphon sp., Phragmosiphon sp., Clitendoceras sp., Pliendoceras sp., Proterocameroceras sp., Mcqueenoceras sp.
Escharendoceras sp. Flower 1956
Platysiphon sp. Flower 1956
Phragmosiphon sp. Flower 1956
Clitendoceras sp. Ulrich and Foerste 1936
Pliendoceras sp. Flower 1956
Proterocameroceras sp. Ruedemann 1905
Mcqueenoceras sp. Ulrich and Foerste 1936
Gastropoda
 Euomphalina - Macluritidae
Macluritella marylandica n. sp.
Macluritella marylandica n. sp. Sando 1957 snail
 Euomphalina - Ophiletidae
Lecanospira ? compacta, Ecculiomphalus sp., Ophileta sp.
Lecanospira ? compacta Salter 1859 snail
Ecculiomphalus sp. Portlock 1843 snail
Ophileta sp. Vanuxem 1842 snail
Trilobita
 Proetida - Hystricuridae
Hystricurus sp.
Hystricurus sp. Raymond 1913 trilobite