Martinsburg - Passage Creek - Passage Creek beds (Ordovician of the United States)

Where: Warren County, Virginia (38.9° N, 78.2° W: paleocoordinates 29.3° S, 55.9° W)

• outcrop-level geographic resolution

When: Martinsburg Formation, Maysvillian (450.2 - 449.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, hematitic, brown sandstone

• paleoenvironmental interpretation by S.M. Holland
• arkosic, fine-grained sandstone beds, somewhat arkosic, weathering rusty...thinly laminated...speckled with hematite...frequent fossiliferous beds of variable thickness and extent...massive sandstone with hematite particles

Size classes: macrofossils, mesofossils

Primary reference: M. H. Secrist and W. R. Evitt. 1943. The paleontology and stratigraphy of the upper Martinsburg formation of Massanutten Mountain, Virginia. Journal of the Washington Academy of Sciences 33(12):358-368 [S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5396: authorized by Steven Holland, entered by Steven Holland on 01.10.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Diplograptidae
Diplograptus sp.
Diplograptus sp. graptolite
Trilobita
 Asaphida - Asaphidae
Isotelus maximus, Isotelus megistos
Isotelus maximus Locke 1838 trilobite
Isotelus megistos Locke 1842 trilobite
 Phacopida - Calymenidae
Calymene sp.
Calymene sp. Brongniart 1822 trilobite
Gastropoda
 Murchisoniina - Eotomariidae
Liospira vitruvia
Liospira vitruvia Billings 1865 snail
 Murchisoniina - Lophospiridae
"Lophospira perangulata" = Lophospira perangulata, "Lophospira trilineata" = Lophospira perangulata, "Lophospira breviangulata" = Ruedemannia lirata, Paupospira burginensis2, "Lophospira liosutura" = Paupospira sumnerensis, "Lophospira tropidophora" = Paupospira tropidophora, "Lophospira expansa" = Paupospira tropidophora
"Lophospira perangulata" = Lophospira perangulata Hall 1847 snail
"Lophospira trilineata" = Lophospira perangulata Hall 1847 snail
"Lophospira breviangulata" = Ruedemannia lirata Ulrich and Scofield 1897 snail
Paupospira burginensis2 Ulrich and Scofield 1897 snail
"Lophospira liosutura" = Paupospira sumnerensis Safford 1869 snail
"Lophospira tropidophora" = Paupospira tropidophora Meek 1873 snail
"Lophospira expansa" = Paupospira tropidophora Meek 1873 snail
Cephalopoda
 Actinocerida - Actinoceratidae
Paractinoceras lamellosum
 Pseudorthocerida - Spyroceratidae
Spyroceras sp.
Spyroceras sp. Hyatt 1884
Bivalvia
 Nuculida - Praenuculidae
"Ctenodonta albertina" = Praenucula albertina
"Ctenodonta albertina" = Praenucula albertina Ulrich 1894 clam
 Cyrtodontida - Cyrtodontidae
"Whitella massanuttenensis" = Cyrtodontula, Cyrtodonta sp.
"Whitella massanuttenensis" = Cyrtodontula clam
Cyrtodonta sp. Billings 1858 clam
 Ostreida - Pterineidae
Pterinea insueta, Pterinea maternata
 Myalinida - Ambonychiidae
"Byssonychia bowmani" = Ambonychia, "Byssonychia sp." = Ambonychia, Byssonychia praecursa
"Byssonychia bowmani" = Ambonychia clam
"Byssonychia sp." = Ambonychia Hall 1847 clam
Byssonychia praecursa Ulrich 1893 clam
 Modiomorphida - Modiomorphidae
Cymatonota sp., Cymatonota cf. pholadis, Orthodesma sp.
Cymatonota sp. Ulrich 1893 clam
Cymatonota cf. pholadis Hall 1847 clam
Orthodesma sp. Hall and Whitfield 1875 clam
 Modiomorphida - Allodesmatidae
Ischyrodonta unionoides
 Pholadomyida - Pholadomyidae
Rhytimya sp.
Rhytimya sp. Ulrich 1893 clam
 Cardiidia - Grammysiidae
Cuneamya umbonata, Cuneamya scapha
Cuneamya scapha Hall and Whitfield 1875 clam
Cuneamya scapha brevior
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina mediolineata1
Rafinesquina mediolineata1
Rafinesquina alternata mediolineata
Rhynchonellata
 Orthida - Dalmanellidae
"Dalmanella multisecta" = Cincinnetina multisecta, "Dalmanella meeki" = Cincinnetina meeki
"Dalmanella multisecta" = Cincinnetina multisecta James 1871
"Dalmanella meeki" = Cincinnetina meeki Miller 1875
 Orthida - Plectorthidae
Plectorthis sp.
Plectorthis sp. Hall and Clarke 1892
 Rhynchonellida - Orthorhynchulidae
Orthorhynchula cf. linneyi
 Atrypida - Anazygidae
Zygospira modesta
Stenolaemata
 Trepostomata - Batostomellidae
Bythopora sp.
Bythopora sp. Miller and Dyer 1878
 Trepostomata - Halloporidae
Hallopora sp.
Hallopora sp. Bassler 1911
1Wagner 2020; 2Wagner 2023