Edited by oilshale
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By oilshale (edited)
Mantis Shrimp
Kingdom: Animalia
Eon: Phanerozoic
Era: Paleozoic
Period: Carboniferous
Sub Period: Mississippian
Epoch: Late
International Age: Serpukhovian
Big Snowy Group
Heath Formation
Bear Gulch Bed
Acquired by: Purchase/Trade
Length: 7 cm
Bear Gulch
Fergus County
Montana
United States
Taxonomy from Factor & Feldmann 1985.
Diagnosis from Factor & Feldmann 1985, p. 331: "Palaeostomatopod with five carinae on posterior surface of carapace and six carinae on abdominal tergites. Terminal spike more than half the length of telson; telson serrate in region of caudal furcae. Uropodal protopod serrate distally; endopod a small spine-like projection; exopod styliform, serrate along distal third of outer margin."
Line drawing from Factor & Feldmann 1985, p. 332:
The bar represents 1 cm.
Identified by oilshale.
References:
Ronald A. Jenner; Cees H.J. Hof; Frederick R. Schram (1998): Palaeo- and Archaeostomatopods (Hoplocarida: Crustacea) from the Bear Gulch Limestone, Mississippian (Namurian), of central Montana. Contributions to Zoology, 67 (3) 155-186.
FREDERICK R. SCHRAM (2007): PALEOZOIC PROTO-MANTIS SHRIMP REVISITED. Journal of Paleontology, September 2007, v. 81, p. 895-916.
Haug et al. (2010): Evolution of mantis shrimps (Stomatopoda, Malacostraca) in the light of new Mesozoic fossils. BMC Evolutionary Biology 2010, 10:290.
Schram (1969): Some Middle Pennsylvanian Hoplocarida (Crustacea) and their phylogenetic significance. Fieldiana, Geology, Vol.12, No.14 Link (04.2013)
Factor, D. F., and Feldmann, R. M. (1985) Systematics and paleoecology of malacostracan arthropods in the Bear Gulch Limestone (Namurian) of Central Montana. Annals of Carnegie Museum 54, p. 319-356.
Edited by oilshale
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