VT-22-3-7 upper Bed 3, type sect. Gorge Fm, Vermont - Clark and Shaw 1968 (Cambrian of the United States)

Where: Franklin County, Vermont (44.9° N, 73.1° W: paleocoordinates 31.7° S, 72.8° W)

• outcrop-level geographic resolution

When: Gorge Formation, Merioneth (501.0 - 485.4 Ma)

• Formation lies below the Highgate Falls Overthrust. Bed is 13 feet from base of section and extends up 5 feet.

• bed-level stratigraphic resolution

Environment/lithology: lithified, dolomitic, pyritic, gray, calcareous limestone

• limestone: dark blue-gray, fine-grained, dolomitic, having pyrite and calcite in pockets. note: lithology description of bed #3 is from pmpd ref #754

Preservation: original calcite

Primary reference: M. G. Clark and A. B. Shaw. 1968. Paleontology of northwestern Vermont XVI. trilobites of the Upper Cambrian Gorge Formation (Upper Bed 3). Journal of Paleontology 42(4):1014-1026 [M. Patzkowsky/P. Borkow/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 8976: authorized by Mark Patzkowsky, entered by Phil Borkow on 10.09.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• The taxonomic list includes only trilobites. It is unknown whether other fauna are found in the bed and not mentioned in the article.
Trilobita
  -
Trilobita "Pygidium No. 10" Walch 1771 trilobite
Pygidium No. 10 (unidentified)
Trilobita "Pygidium No. 11" Walch 1771 trilobite
Pygidium No. 11 (unidentified)
Trilobita "Pygidium No. 12" Walch 1771 trilobite
Pygidium No. 12 (unidentified)
Trilobita "Pygidium No. 13" Walch 1771 trilobite
Pygidium No. 13 (unidentified)
 Corynexochida - Leiostegiidae
Phoreotropis puteatus, "Punctularia quebecensis" = Ptychopleurites
Phoreotropis puteatus trilobite
4 cranidia
"Punctularia quebecensis" = Ptychopleurites trilobite
3 cranidia and 12 pygidia
 Corynexochida - Illaenuridae
Tatonaspis breviceps trilobite
1 frag. cranidium
Platydiamesus inornatus trilobite
4 cranidia and 12 pygidia
  - Phylacteridae
Phylacterus saylesi trilobite
3 cranidia
 Harpida - Harpetidae
Heterocaryon platystigma trilobite
1 cranidum
  - Dikelocephalidae
Prosaukia irrassa trilobite
1 cranidium
 Ptychopariida - Plethopeltidae
"Plethometopus sp." = Plethopeltis Raymond 1913 trilobite
6 cranidia
Leiocoryphe brevis trilobite
5 cranidia and 1 pygidia
Stenopilus pronus trilobite
1 cranidium
 Ptychopariida - Catillicephalidae
Theodenisia macrops trilobite
14 cranidia annd 12 pygidia
 Asaphida - Remopleurididae
Richardsonella arctostriata trilobite
1 cranidium
 Asaphida - Ptychaspididae
Keithia schucherti trilobite
1 cranidium
? Keithiella raymondi trilobite
1 pygidium