Eosomichelinoceras

Eosomichelinoceras is an extinct genus from the actively mobile carnivorous cephalopod family Baltoceratidae that lived in what would be Asia and South America during the Ordovician from 461—452 mya, existing for approximately 9 million years.[1]

Eosomichelinoceras
Temporal range: Ordovician 461–452 Ma
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: †Orthocerida
Family: †Baltoceratidae
Genus: †Eosomichelinoceras
Chen (1974)

Taxonomy

Eosomichelinoceras was named by Chen (1974)[1] Its type is Eosomichelinoceras huananense. It was assigned to Orthocerida by Chen (1974); and to Baltoceratidae by Kröger et al. (2007).[2]

Morphology

Eosomichelinoceras is a smooth or transversally lirate slender, orthoconic baltoceratid with a narrow, tubular siphuncle,[3] located between the center and the edge of the shell. Connecting rings are thin, septal necks orthochoantic, and without known endosiphuncular or cameral deposits.

Distribution

Fossils of Eosomichelinoceras have been found in Argentina, China and Iran.[1]

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gollark: In some cases, for simple code, you can do some REALLY obfuscated obfuscation, but that's time consuming and hard.
gollark: Or, dump it to bytecode and put the bytecode string in your program (use `textutils.serialise` to make a valid string literal).
gollark: Well, there are lots of ways. First, you can minify it using... a minifier.

References
  1. Eosomichelinoceras at Fossilworks.org
  2. J. Y. Chen. 1974. Ordovician Nautiloidea. A Handbook of the Stratigraphy and Paleontology in Southwest China 138-143
  3. B. Kröger, M. S. Beresi, and E. Landing. 2007. Early orthoceratoid cephalopods from the Argentine Precordillera (Lower-Middle Ordovician). Journal of Paleontology 81(6):1266-1283

Further reading
  • Fossils (Smithsonian Handbooks) by David Ward
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