Grand Isle, Lake Champlain, sponge reef (Ordovician of the United States)

Also known as Reef 1815

Where: Grand Isle County, Vermont (44.7° N, 73.3° W)

• Paleocoordinates: 9.9° S, 100.6° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Crown Point Formation, Chazyan (470.0 - 457.3 Ma)

• near the top of the formation

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• Zittelella reef

Size class: macrofossils

Primary reference: M. Pitcher. 1964. Evolution of Chazyan (Ordovician) reefs of eastern United States and Canada. Bulletin of Canadian Petroleum Geology 12(3):632-691 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 80821: authorized by Wolfgang Kiessling, entered by Uta Merkel on 13.05.2008

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Demospongiae
 Lithistida - Anthaspidellidae
Zittelella varians
Zittelella varians Billings 1861 demosponge
Anthozoa
 Sarcinulida - Billingsariidae
Billingsaria parva
Billingsaria parva tabulate coral
Stenolaemata
 Trepostomata - Trematoporidae
Batostoma chazyensis
Rhodophyceae
  - Solenoporaceae
? Solenopora sp.
? Solenopora sp. Dybowski 1877
Rothpletzella
  -
Rothpletzella sp.