| Asklepioceras | |
|---|---|
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Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | † Ammonoidea |
| Order: | † Ceratitida |
| Family: | † Trachyceratidae |
| Subfamily: | † Anolcitinae |
| Genus: | † Asklepioceras Renz, 1910 |
| Species | |
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| Synonyms | |
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Asklepioceras is a genus in the Ceratitid family Arpaditidae from the Middle and Upper Triassic (Ladinian and Carnian stages) of Italy, Romania, Turkey, and British Columbia (Canada).
The type species, Asklepioceras segmentatum was originally named as Arpadites segmentatus by Renz, 1910. In 1951, it was assigned to Asklepioceras by L. F. Spath. [1] Founded in British Columbia in 1947, A. mahaffii was later synonymised with A. laurenci. Two more species, A. exilis and A. altilis, both from Canada, were described in 1994 by E. T. Tozer. [2]
The genus is characterized by evolute to involute, discoidal to subglobular shells with a median (ventral) furrow not bordered by keels (in contrast to Dittmarites in which it is) and simple ceratitic sutures. (Arkell et al. 1962, L162) The genotype Asklepioceras segmentatus Renz, 1910, based on Arpadites (Dittmarites) segmentatus Mojsisovics, 1893. is found in the Carnian of the Alps.
The Carnian is the lowermost stage of the Upper Triassic Series. It lasted from 237 to 227 million years ago (Ma). The Carnian is preceded by the Ladinian and is followed by the Norian. Its boundaries are not characterized by major extinctions or biotic turnovers, but a climatic event occurred during the Carnian and seems to be associated with important extinctions or biotic radiations. Another extinction occurred at the Carnian-Norian boundary, ending the Carnian age.
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