R19 (Ordovician of the United States)

Where: Vermont (44.8° N, 73.4° W: paleocoordinates 28.7° S, 56.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Crown Point Formation (Chazy Group), Whiterockian (471.8 - 457.5 Ma)

Environment/lithology: reef rocks

Size classes: macrofossils, mesofossils

Reposited in the NYSM

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 103291: authorized by Melanie Hopkins, entered by Melanie Hopkins on 25.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Cheiruridae
Sphaerexochus valcourensis Shaw and Bolton 2011 trilobite
 Ptychopariida - Raymondinidae
Glaphurina lamottensis Ulrich 1930 trilobite
 Lichida - Lichidae
Amphilichas minganensis Billings 1865 trilobite