Division D Beds, "Ophileta beds", Section northeast of Shoreham (Ordovician of the United States)

Where: Vermont (43.9° N, 73.3° W: paleocoordinates 31.6° S, 67.1° W)

• outcrop-level geographic resolution

When: Macerodus dianae conodont zone, Fort Ann Formation, Stairsian (485.4 - 478.6 Ma)

• Paraplethopeltis seelyi trilobites zone.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, bioturbated, black limestone and lithified, gray dolomite

• Blue limestone in beds one or two feet thick, breaking with a flinty fracture ; often with considerable dolomitic matter intermixed, giving the weathered surface a rough, curdled appearance; becoming more and more interstrati6ed with calciferous sandstone in thin layers, which frequently weathers to a friable, ochreous rotten-stone

Size class: macrofossils

Reposited in the AMNH, YPM

Primary reference: E. Brainerd and H. M. Seely. 1890. The Calciferous Formation in the Champlain valley. Bulletin of the American Museum of Natural History 3(1):1-24 [P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 154942: authorized by Pete Wagner, entered by Pete Wagner on 21.03.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• Other taxa include:

•However, I cannot find more recent classifications of these species (PJW).

Rhynchonellata
 Orthida - Finkelnburgiidae
"Orthis macleodi n. sp." = Finkelnburgia macleodi
"Orthis macleodi n. sp." = Finkelnburgia macleodi Whitfield 1889
Orthis n. sp. Macleodi
Gastropoda
 Euomphalina - Ophiletidae
"Ophileta compacta" = Lecanospira compacta
"Ophileta compacta" = Lecanospira compacta Salter 1859 snail
 Euomphalina - Raphistomatidae
"Raphistoma praevium n. sp." = Ceratopea canadensis
"Raphistoma praevium n. sp." = Ceratopea canadensis Billings 1865 snail
Raphistoma n. sp. prævium
 Eogastropoda - Sinuopeidae
"Pleurotomaria beekmanensis n. sp." = Euconia etna
"Pleurotomaria beekmanensis n. sp." = Euconia etna Billings 1865 snail
Pleurotomaria n. sp. Beekmanensis
 Murchisoniina - Hormotomidae
"Murchisonia gracilens n. sp." = Hormotoma gracilens
"Murchisonia gracilens n. sp." = Hormotoma gracilens Whitfield 1889 snail
Tergomya
 Archinacellida - Archinacellidae
"Tryblidium pileolum n. sp." = Archinacella pileolum
"Tryblidium pileolum n. sp." = Archinacella pileolum Whitfield 1889