I77EG2, I-77 road cut, Effna Limestone member (Ordovician of the United States)

Where: Virginia (37.7° N, 79.5° W: paleocoordinates 30.2° S, 60.4° W)

• coordinate stated in text

When: Effna Limestone Member (Edinburg Formation), Sandbian (458.4 - 453.0 Ma)

Environment/lithology: perireef or subreef; limestone

• flank

Size classes: macrofossils, mesofossils

Primary reference: J. R. Carlucci and S. R. Westrop. 2012. Trilobite Biofacies along an Ordovician (Sandbian) Carbonate Buildup to Basin Gradient, Southwestern Virginia. Palaios 27:19-34 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 178252: authorized by Björn Kröger, entered by Björn Kröger on 28.04.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Illaneus sp.
Trilobita
 Lichida - Lichidae
Amphilichas sp.
Amphilichas sp. Raymond 1905 trilobite
 Corynexochida - Styginidae
Raymondaspis sp.
Raymondaspis sp. Pribyl 1948 trilobite
 Corynexochida - Illaenidae
Thaleops sp., Bumastoides sp.
Thaleops sp. Conrad 1843 trilobite
Bumastoides sp. Whittington 1954 trilobite
 Phacopida - Cheiruridae
Sphaerexochus sp.
Sphaerexochus sp. Beyrich 1845 trilobite
 Phacopida - Pterygometopidae
Calyptaulax sp.
Calyptaulax sp. Cooper 1930 trilobite
 Asaphida - Asaphidae
Isotelus sp.
Isotelus sp. Dekay 1824 trilobite
 Trinucleida - Raphiophoridae
Ampyx sp.
Ampyx sp. Dalman 1827 trilobite
Artiopoda
 Agnostida - Metagnostidae
Arthrorhachis sp.
Arthrorhachis sp. Hawle and Corda 1847