Blacksmith Fork (Devonian of the United States)

Where: Utah (41.6° N, 111.7° W)

• Paleocoordinates: 27.0° S, 77.1° W (Wright 2013)

When: Lower Grassy Flat Member (Water Canyon Formation), Emsian (407.6 - 393.3 Ma)

Environment/lithology: marginal marine; lithified, massive dolomite

Size class: macrofossils

Primary reference: R. H. Denison. 1958. The Devonian vertebrates of Utah, Part 3 ARTHRODIRA. Fieldiana 11(9):491-551 [R. Bicknell/R. Bicknell]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 233171: authorized by Russell Bicknell, entered by Russell Bicknell on 17.01.2024, edited by Joseph Flannery-Sutherland

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Placodermi
 Arthrodira - Actinolepidae
Simblaspis cachensis, Bryantolepis sp., Aethaspis major, Aethaspis utahensis
Simblaspis cachensis Denison 1958 armour-plated fish
Bryantolepis sp. Denison 1958 armour-plated fish
Aethaspis major Denison 1958 armour-plated fish
Aethaspis utahensis Denison 1958 armour-plated fish
Chondrichthyes
 Diplacanthiformes -
Bryantonchus peracutus2
Bryantonchus peracutus2 Burrow 2007 spiny fish
  -
Ptychodictyon americanum2
Ptychodictyon americanum2 Burrow 2007 spiny fish
 Ischnacanthiformes - Ischnacanthidae
Cacheacanthus utahensis2
Cacheacanthus utahensis2 Burrow 2007 spiny fish
  -
Nodocosta denisoni2
Nodocosta denisoni2 Burrow 2007 spiny fish
Petromyzontida
 Cephalaspidiformes -
Camptaspis utahensis1
Camptaspis utahensis1 Branson and Mehl 1931
Number 592, Vertebrate Paleontology, University of Missouri (holotype)
Pteraspidomorphi
 Pteraspidomorphes -
Allocryptaspis utahensis3
Pteraspidomorpha
 Pteraspidiformes - Protaspididae
Psephaspis williamsi4
1Branson and Mehl 1931; 2Burrow 2007; 3Denison 1953; 4Orvig 1961