Stacheoceras gemmellaroi Miller 1944 (ammonite)

Cephalopoda - Goniatitida - Vidrioceratidae

Full reference: A. K. Miller. 1944. Permian cephalopods, Part IV of Geology and paleontology of the Permian area northwest of Las Delicias, southeastern Coahulia, Mexico. Geological Society of America Special Paper 52:71-127

Belongs to Stacheoceras according to T. B. Leonova 2018

See also Bogoslovskaya 1990, Leonova 2002, Miller 1944 and Nassichuk 1977

Sister taxa: Stacheoceras (Neostacheoceras), Stacheoceras andrussowi, Stacheoceras antiquum, Stacheoceras arthaberi, Stacheoceras beishanense, Stacheoceras boesei, Stacheoceras borissiaki, Stacheoceras caucasicus, Stacheoceras chaotianense, Stacheoceras collignoni, Stacheoceras darae, Stacheoceras discoidale, Stacheoceras gaudryi, Stacheoceras giganteum, Stacheoceras gilliamense, Stacheoceras globulinum, Stacheoceras gordoni, Stacheoceras iwaizakiense, Stacheoceras karpinskyi, Stacheoceras lijiangense, Stacheoceras mediterraneum, Stacheoceras megamultidentatum, Stacheoceras mirificum, Stacheoceras oblatum, Stacheoceras orientale, Stacheoceras pengboense, Stacheoceras priscum, Stacheoceras quadridens, Stacheoceras raridentatum, Stacheoceras rothi, Stacheoceras sexlobatum, Stacheoceras shaiwaense, Stacheoceras sosiense, Stacheoceras tepense, Stacheoceras tietzei, Stacheoceras timorense, Stacheoceras toumanskayae, Stacheoceras tschernyschewi, Stacheoceras vogti, Stacheoceras xiukangense, Stacheoceras yajiangense, Parastacheoceras bidentatus

Type specimen: YPM 16653-16654. Its type locality is King 38, Bed 5, Malascachas section, Las Delicias, which is in a Roadian marine shale/limestone in the Palo Quemado Formation of Mexico.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell diameter 28.2

Distribution:

• Permian of Canada (1: British Columbia collection), Mexico (3)

Total: 4 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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