Also known as Ruedemann's Beekmantown Formation, Valcour cephalopods
Where: Clinton County, New York (44.6° N, 73.4° W: paleocoordinates 30.2° S, 61.1° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Oepikodus communis - Reuterodontus andinus conodont zone, Sciota Member (Fort Cassin Formation), Cassinian (482.3 - 470.0 Ma)
• formation-level stratigraphic resolution
Environment/lithology: shallow subtidal; lithified, calcareous, carbonaceous limestone
•highstand systems tract of the carbonate-dominated members
•of the underlying Tribes Hill and Rochdale Formations. In all
•of these carbonate-dominated members, three lithofaciesbiofacies
•associations occur: 1) a lower, thin-bedded trilobiteand
•echinoderm hash-bearing interval with intraclast pebble
•conglomerates deposited under wave-dominated environments;
•2) a middle interval with massive thrombolites and
•mollusk-rich faunas; and 3) restricted marine deposits at the
•top of the formation (Landing et al., 1996, 2003; Kro¨ ger and
•Landing, 2007, 2008; Figs. 4, 5). The upward replacement of a
•trilobite- and echinoderm-dominated fauna by a mollusk-rich
•fauna within these highstand facies tract units is consistent
•with aggradation/shoaling into proximal, more restricted
Size class: macrofossils
Preservation: original aragonite, replaced with calcite
Primary reference: R. Ruedemann. 1906. Cephalopoda of the Beekmantown and Chazy formations of the Champlain Basin. Bulletin of the New York State Museum, Paleontology 14:389-611 [P. Wagner/K. Koverman/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 42798: authorized by Pete Wagner, entered by Kimberly Koverman on 05.08.2004, edited by Björn Kröger
Creative Commons license: CC BY (attribution)
Taxonomic list
| Cephalopoda | |
"Piloceras explanator" = Cassinoceras wortheni
"Piloceras explanator" = Cassinoceras wortheni Billings 1865 | |
"Cameroceras (Proterocameroceras) brainerdi" = Proterocameroceras brainerdi, Clitendoceras montrealense
"Cameroceras (Proterocameroceras) brainerdi" = Proterocameroceras brainerdi Whitfield 1886
Clitendoceras montrealense Ruedemann 1906 | |
|
Baltoceras ? pusillum Ruedemann 1906 | |
"Orygoceras cornuoryx" = Rudolfoceras cornuoryx
| |
|
Protocycloceras lamarcki Billings 1859 | |
"Schroederoceras eatoni" = Curtoceras eatoni, "Schroederoceras cassinense" = Curtoceras eatoni
"Schroederoceras eatoni" = Curtoceras eatoni Whitfield 1886
"Schroederoceras cassinense" = Curtoceras eatoni Whitfield 1886 | |
"Eurystomites rotundus" = Campbelloceras rotundum, "Tarphyceras seelyi" = Centrotarphyceras seelyi, Eurystomites kelloggi, Eurystomites amplectens, Eurystomites accelerans, Tarphyceras clarkei
"Eurystomites rotundus" = Campbelloceras rotundum Hyatt 1894
"Tarphyceras seelyi" = Centrotarphyceras seelyi Whitfield 1886
Eurystomites kelloggi Whitfield 1886
Eurystomites amplectens Ruedemann 1906
Eurystomites accelerans Ruedemann 1906
Tarphyceras clarkei Ruedemann 1906 | |
|
Lawrenceoceras confertissimum Whitfield 1886 | |
|
Glenisteroceras obscurum Flower and Teichert 1957 | |
|
Cyrtobaltoceras gracile Flower 1964 | |