Orthid fauna of the Zygospira-Hebertella community, Reedsville and Martinsburg F (Ordovician of the United States)

Where: Maryland (39.3° N, 77.7° W: paleocoordinates 29.2° S, 55.3° W)

• coordinate based on political unit

• basin-level geographic resolution

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

• "Reedsville and Martinsburg Fm.s, U. Ord."

Environment/lithology: transition zone or lower shoreface; calcareous siltstone

• "calcareous mud and silt, shallower than 'atrypid fauna' ('inner infralittoral'). geosyncline; highland to E"

Size class: macrofossils

Primary reference: P. W. Bretsky. 1970. Upper Ordovician Ecology of the Central Appalachians. Bulletin of the Peabody Museum of Natural History 34:1-150 [M. Uhen/J. Ju/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 406: authorized by Jack Sepkoski, entered by Mike Sommers on 03.12.1998

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Bretsky, 1969, GSA Bull. Bretsky, 1970, Yale Peabody Mus. Bull. 34"
Show authors, comments, and common names
Stenolaemata
 Trepostomata - Heterotrypidae
Dekayia sp.
Dekayia sp. Milne-Edwards and Haime 1851
 Trepostomata - Halloporidae
Hallopora sp.
Hallopora sp. Bassler 1911
 Trepostomida - Monticuliporidae
Monticulipora sp.
Monticulipora sp. d'Orbigny 1850
Rhynchonellata
 Orthida - Plectorthidae
Hebertella sinuata
 Rhynchonellida - Orthorhynchulidae
Orthorhynchula linneyi
Orthorhynchula linneyi James 1881
originally entered as "Orthorhynchula linneyi"
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina alternata