Bear Gulch (Carnegie Museum Collection) (Carboniferous of the United States)

Where: Fergus County, Montana (47.0° N, 108.9° W: paleocoordinates 5.4° N, 35.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bear Gulch Member (Heath Formation), Arnsbergian (326.4 - 318.1 Ma)

• "Namurian E2b" (E2 = Arnsbergian)

• member-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, concretionary limestone

• "shallow, marine tropical bay" (Lund 1985)
• "rhythmically alternating sets of microturbidite beds and laminar beds" (Grogan and Lund 1997)

Size class: macrofossils

Preservation: adpression, concretion, soft parts

Collected by J. Lund, W. G. Melton, J. R. Horner, D. Melton, B. Snyder; reposited in the CM

Collection methods: mechanical, peel or thin section,

• material is prepared by taking thin sections

Primary reference: W. G. Melton. 1969. A new dorypterid fish from central Montana. Northwest Science 43:196-206 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90681: authorized by John Alroy, entered by John Alroy on 12.08.2009, edited by Loic Villier and Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Enoplea
 Chromadorida - Nemavermidae
Nemavermes mackeei13 Schram 1973
CM 33990, 33993 (x9)
Polychaeta
 Phyllodocida - Goniadidae
Carbosesostris megaliphagon13 Schram 1979 scale worm
CM 33988, 33989
 Eunicida - Lumbrinereidae
Phiops aciculorum13 Schram 1979
CM 33944, 33945
Chondrichthyes
 Symmoriiformes - Symmoriidae
Stethacanthus altonensis4 St. John and Worthen 1875 elasmobranch
 Symmoriiformes - Falcatidae
Falcatus falcatus4 St. John and Worthen 1883 elasmobranch
some material earlier attributed to Physonemus
Damocles serratus n. gen. n. sp.5 Lund 1986 elasmobranch
includes material earlier compared to Physonemus attenuatus
 Squatinactiformes - Squatinactidae
Squatinactis caudispinatus n. gen. n. sp.6 Lund and Zangerl 1974 elasmobranch
 Iniopterygia - Iniopterygidae
Papilionichthys stahlae2 Grogan and Lund 2009 cartilaginous fish
Rainerichthys zangerli n. gen. n. sp.2 Grogan and Lund 2009 cartilaginous fish
 Chondrenchelyiformes - Chondrenchelyidae
Harpagofututor volsellorhinus n. gen. n. sp.3 Lund 1982 chimaera
 Debeeriiformes - Debeeriidae
Debeerius ellefseni n. gen. n. sp.1
Debeerius ellefseni n. gen. n. sp.1 Grogan and Lund 2000 chimaera
 Petalodontiformes - Pristodontidae
Petalorhynchus beargulchensis n. sp.7 Lund 1989 chimaera
 Petalodontiformes - Belantseidae
Netsepoye hawesi n. gen. n. sp.7, Belantsea montana n. gen.7
Netsepoye hawesi n. gen. n. sp.7 Lund 1989 chimaera
Belantsea montana n. gen.7 Lund 1989 chimaera
Osteichthyes
  -
Lineagruan judithi n. gen. n. sp.11, Lineagruan snowyi n. sp.11, Paratarrasius hibbardi n. gen.9
Lineagruan judithi n. gen. n. sp.11 Mickle et al. 2009
Lineagruan snowyi n. sp.11 Mickle et al. 2009
Paratarrasius hibbardi n. gen.9 Lund and Melton 1982
Actinopteri
 Palaeonisciformes - Rhadinichthyidae
Cyranorhis bergeraci n. gen. n. sp.10, Wendyichthys dicksoni n. gen.10
Cyranorhis bergeraci n. gen. n. sp.10 Lund and Poplin 1997
Wendyichthys dicksoni n. gen.10 Lund and Poplin 1997
Osteichthyes
  - Aesopichthyidae
Aesopichthys erinaceus n. gen. n. sp.12, Proceramala montanensis n. gen. n. sp.12
Aesopichthys erinaceus n. gen. n. sp.12 Poplin and Lund 2000
Proceramala montanensis n. gen. n. sp.12 Poplin and Lund 2000
  -
Beagiascus pulcherrimus n. gen. n. sp.11
Beagiascus pulcherrimus n. gen. n. sp.11 Mickle et al. 2009
Coelacanthimorpha
 Coelacanthiformes -
Lochmocercus aciculiodontus n. gen. n. sp.8 Lund and Lund 1984 coelacanth
 Coelacanthiformes - Hadronectoridae
Hadronector donbairdi n. gen. n. sp.8, Polyosteorhynchus simplex n. gen. n. sp.8
Hadronector donbairdi n. gen. n. sp.8 Lund and Lund 1984 coelacanth
Polyosteorhynchus simplex n. gen. n. sp.8 Lund and Lund 1984 coelacanth
 Coelacanthiformes - Rhabdodermatidae
Caridosuctor populosum n. gen. n. sp.8
Caridosuctor populosum n. gen. n. sp.8 Lund and Lund 1984 coelacanth
Asteroidea
 Hemizonida - Helianthasteridae
Lepidasterella montanensis n. sp.14 Welsh 1984 sea star
Archisymplectes rhothon
  -
Archisymplectes rhothon13 Schram 1973
CM 33941, 33942