PBDB Collection

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

unclassified

	informal asaphid indet.

	informal illaenid indet.
Trilobita - Trinucleida - Raphiophoridae

	Lonchodomas chaziensis Shaw 1968
Trilobita - Asaphida - Remopleurididae

	Remopleurides canadensis Billings 1865
Trilobita - Lichida - Lichidae

	Amphilichas minganensis (Billings 1865)
Trilobita - Phacopida - Pterygometopidae

	Calyptaulax annulata (Raymond 1905)
	recombined as Calliops annulatus
Trilobita - Phacopida - Encrinuridae

	Cybeloides prima (Narraway and Raymond 1906)
	corrected as Cybele primus

	Encrinuroides insularis Shaw 1968
	recombined as Physemataspis insularis
Trilobita - Phacopida - Cheiruridae

	Sphaerexochus parvus Billings 1865
	= Sphaerexochus valcourensis Shaw and Bolton 2011	Shaw and Bolton 2011

	Ceraurinella latipyga Shaw 1968
Trilobita - Proetida - Dimeropygidae

	Dimeropyge clintonensis Shaw 1968
Trilobita - Proetida - Otarionidae

	Otarion spinicaudatum Shaw 1968
	recombined as Beggaspis spinicaudatum
see common names

Geography

Country:	United States	State/province:	New York
Coordinates:	44.6° North, 73.4° West (view map)
Paleocoordinates:	28.8° South, 56.4° West
Basis of coordinate:	based on nearby landmark
Geographic resolution:	small collection

Time

Period:	Ordovician
10 m.y. bin:	Ordovician 2-4
Key time interval:	Whiterockian
Age range of interval:	470.00000 - 457.00000 m.y. ago

Stratigraphy

Geological group:	Chazy	Formation:	Crown Point
Local section:	Pebble Beach, Valcour Island	Local bed:	79 ft
Local order:	bottom to top

Lithology and environment

Primary lithology:	massive lithified silty "limestone"
Secondary lithology:	lithified dolomite
Lithology description: "Same [as silty dolomite laminated limestone with several thin calcarenite stringers], heavy bedded."
Environment:	carbonate indet.

Taphonomy

Modes of preservation:	body,replaced with silica
Size of fossils:	macrofossils,mesofossils

Collection methods and comments

Collection methods:	chemical,field collection
Reason for describing collection:	biostratigraphic analysis
Museum repositories:	NYSM

Metadata

Database number:	103001
Authorizer:	M. Hopkins	Enterer:	M. Hopkins
Research group:	marine invertebrate
Created:	2011-01-21 09:44:17	Last modified:	2011-01-20 16:44:17
Access level:	the public	Released:	2011-01-21 09:44:17
Creative Commons license:	CC BY

Reference information

Primary reference:

23704.

F.C. Shaw. 1968. Early Middle Ordovician (Chazy) trilobites of New York. New York State Museum and Science Service Memoir 17:1-163 [P. Wagner/P. Wagner]

Secondary references:

36489

F. C. Shaw and T. E. Bolton. 2011. Ordovician trilobites from the Romaine and Mingan Formations (Ibexian-Late Whiterockian), Mingan Islands, Quebec. Journal of Paleontology 85(3):406-441 [M. Hopkins/M. Hopkins]