PB80-81: Whiterockian, New York

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Lichida - Lichidae
Amphilichas minganensis (Billings 1865)
    = Hemiarges turneri Chatterton and Ludvigsen 1976
Chatterton and Ludvigsen 1976
    = Hemiarges turneri Chatterton and Ludvigsen 1976
Rudkin et al. 1994
subspecies amiculus
Trilobita - Proetida - Telephinidae
Carrickia setoni Shaw 1968
Trilobita - Proetida - Dimeropygidae
Dimeropyge clintonensis Shaw 1968
Trilobita - Proetida - Otarionidae
Otarion spinicaudatum Shaw 1968
Trilobita - Corynexochida - Illaenidae
Illaenidae indet. Hawle and Corda 1847
Trilobita - Trinucleida - Raphiophoridae
Lonchodomas chaziensis Shaw 1968
Trilobita - Asaphida - Remopleurididae
Remopleurides canadensis Billings 1865
Trilobita - Asaphida - Asaphidae
Asaphidae indet. Burmeister 1843
Trilobita - Phacopida - Pterygometopidae
Calyptaulax annulata (Raymond 1905)
Trilobita - Phacopida - Encrinuridae
Encrinuroides insularis Shaw 1968
Cybeloides prima (Narraway and Raymond 1906)
Trilobita - Phacopida - Cheiruridae
? Nieszkowskia satyrus (Billings 1865)
? Acanthoparypha sp. Whittington and Evitt 1953
Sphaerexochus parvus Billings 1865
    = Sphaerexochus valcourensis Shaw and Bolton 2011
Shaw and Bolton 2011
Ceraurinella latipyga n. sp. Shaw 1968
Sphaerocoryphe goodnovi
Trilobita - Odontopleurida - Odontopleuridae
Apianurus narrawayi (Raymond 1910)
Ceratocephala triacantheis Whittington and Evitt 1953
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 - 457 m.y. ago
Stratigraphy
Geological group:Chazy Formation:Crown Point
Local section:Pebble Beach, Valcour Island Local bed:80-81 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:103002
Authorizer:M. Hopkins Enterer:M. Hopkins
Modifier:M. Hopkins Research group:marine invertebrate
Created:2011-01-21 09:46:41 Last modified:2011-01-24 14:16:03
Access level:the public Released:2011-01-21 09:46:41
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:

7069 B. D. E. Chatterton and R. Ludvigsen. 1976. Silicified Middle Ordovician trilobites from the South Nahanni River Area, District of Mackenzie, Canada. Palaeontographica Abteilung A 154(1-3):1-106 [S. Holland/T. Hanson/T. Hanson]
63309 D. M. Rudkin, R. P. Tripp, and R. Ludvigsen. 1994. The Ordovician trilobite genus Hemiarges (Lichidae: Trochurinae) from North American and Greenland. New York State Museum Bulletin 481:289-306 [M. Hopkins/M. Hopkins]
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]