Cardiola gibbosa Community, Perham Formation, Presque Isle, Maine (Silurian of the United States)

Where: Maine (46.7° N, 68.0° W: paleocoordinates 28.1° S, 32.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: upper Member (Perham Formation), Ludlow (427.4 - 423.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; limestone and calcareous mudstone

• "Association and preservation document post-mortem transport as debris flows derived from nearby, shallower community, where conditions were similar to cephalopod limestone biofacies described by Kriz (1979 etc.)..."

•SEP: continuation from previous quote: "Kriz interprets the environment of the Cardiola community as shallow water below wave base, but within reach of surface currents"

•SEP environmental call based on scanty given data and very limited description in Berry (1964) JP 38:587-; appears to be mostly clastic dominated

• "Thin limestone interbeds in Early Ludlow sequence of graptolite bearing, calcareous mudstones..."

Primary reference: A. J. Boucot. 1999. Some Wenlockian-Geddinian, chiefly brachiopod dominated communities of North America. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 549-591 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24791: authorized by Michael Foote, entered by Michael Foote on 20.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Cyrtodontida - Cardiolidae
 Orthocerida - Orthoceratidae
Crinoidea indet. Miller 1821 Sea lily