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

Where: Fergus County, Montana (46.9° N, 109.0° W: paleocoordinates 5.4° N, 35.1° W)

• coordinate based on nearby landmark

• local area-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

unclassified
  -
"Metazoa indet." = Animalia11
"Metazoa indet." = Animalia11 Linnaeus 1758
CM 33990, 33993 (x9)
Archisymplectes rhothon
  -
Archisymplectes rhothon16 Schram 1973
CM 33941, 33942
Polychaeta
 Phyllodocida - Goniadidae
Carbosesostris megaliphagon16 Schram 1979 scale worm
CM 33988, 33989
 Eunicida - Lumbrinereidae
Phiops aciculorum16 Schram 1979
CM 33944, 33945
Xiphosura
 Xiphosurida - Austrolimulidae
"Paleolimulus longispinus" = Boeotiaspis longispinus15
"Paleolimulus longispinus" = Boeotiaspis longispinus15 Schram 1979
CM 33946, 33947, 33983-33985, 33994-34000
 Xiphosurida - Belinuridae
"? Euproopidae indet." = Belinuridae15
"? Euproopidae indet." = Belinuridae15 Zittel and Eastman 1913
CM 33986, 33987 ("may also be euproopids")
Asteroidea
  -
Lepidasterella montanensis n. sp.17 Welsh 1984 sea star
Chondrichthyes
 Iniopterygia - Iniopterygidae
Rainerichthys zangerli n. gen. n. sp.2 Grogan and Lund 2009 cartilaginous fish
Papilionichthys stahlae2 Grogan and Lund 2009 cartilaginous fish
 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
 Symmoriiformes - Symmoriidae
Stethacanthus altonensis4 St. John and Worthen 1875 elasmobranch
 Squatinactiformes - Squatinactidae
Squatinactis caudispinatus n. gen. n. sp.6 Lund and Zangerl 1974 elasmobranch
 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 - Belantseidae
Belantsea montana n. gen.7, Netsepoye hawesi n. gen. n. sp.7
Belantsea montana n. gen.7 Lund 1989 chimaera
Netsepoye hawesi n. gen. n. sp.7 Lund 1989 chimaera
 Petalodontiformes - Pristodontidae
Petalorhynchus beargulchensis n. sp.7 Lund 1989 chimaera
Coelacanthimorpha
 Coelacanthiformes - Rhabdodermatidae
Caridosuctor populosum n. gen. n. sp.8
Caridosuctor populosum n. gen. n. sp.8 Lund and Lund 1984 coelacanth
 Coelacanthiformes -
Lochmocercus aciculiodontus n. gen. n. sp.8 Lund and Lund 1984 coelacanth
  -
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 lobe-finned fish
Polyosteorhynchus simplex n. gen. n. sp.8 Lund and Lund 1984 lobe-finned fish
Osteichthyes
  -
Lineagruan snowyi n. sp.12, Lineagruan judithi n. gen. n. sp.12
Lineagruan snowyi n. sp.12 Mickle et al. 2009
Lineagruan judithi n. gen. n. sp.12 Mickle et al. 2009
  - Aesopichthyidae
Proceramala montanensis n. gen. n. sp.13, Aesopichthys erinaceus n. gen. n. sp.13
Proceramala montanensis n. gen. n. sp.13 Poplin and Lund 2000
Aesopichthys erinaceus n. gen. n. sp.13 Poplin and Lund 2000
  -
Kalops monophrys n. sp.14, Beagiascus pulcherrimus n. gen. n. sp.12
Kalops monophrys n. sp.14 Poplin and Lund 2002
Beagiascus pulcherrimus n. gen. n. sp.12 Mickle et al. 2009
Actinopteri
  - Tarrasiidae
Paratarrasius hibbardi n. gen.9 Lund and Melton 1982
Osteichthyes
 Palaeonisciformes - Rhadinichthyidae
Wendyichthys dicksoni n. gen.10, Cyranorhis bergeraci n. gen. n. sp.10
Wendyichthys dicksoni n. gen.10 Lund and Poplin 1997
Cyranorhis bergeraci n. gen. n. sp.10 Lund and Poplin 1997