Where: New York (44.6° N, 73.4° W: paleocoordinates 27.1° S, 51.7° W)

• local area-level geographic resolution

When: Nemagraptus gracilis graptolite zone, Sandbian (458.4 - 453.0 Ma)

• "...From a yet undetermined horizon of the Chazy limestone of Valcour island, Lake Champlain, but the position is probably near the upper portion of the middle beds." (Hudson, 1907)

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•Revised stratigraphy based on: Ross RJ, Adler FJ, Amsden TW, Bergström D, Bergström SM, et al.. (1982) The Ordovician System in the United States, Correlation chart and explanatory notes. International Union of Geological Sciences, Publication No. 12.

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Collected by P. Raymond, C. Beecher, G. Hudson, E. Hudson in 1902, 1903, 1904, 1905

• Blastoidocrinus carchariaedens specimens were collected on multiple occasions by Raymond in 1902, Beecher in 1903, G. Hudson in 1904, and E. Hudson in 1905.

Primary reference: G. H. Hudson. 1907. On some Pelmatozoa from the Chazy Limestone of New York. New York State Museum Bulletin, Geology Papers 107:97-127 [G. Webster/G. Webster]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 179816: authorized by William Ausich, entered by Lena Cole on 01.07.2016

Creative Commons license: CC BY (attribution)