Biology:Typhlokorynetes

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Short description: Extinct species of trilobite


Typhlokorynetes
Temporal range: Early Tremadocian
Typhlokorynetes plana.jpg
T. plana
Scientific classification
Kingdom:
Phylum:
Class:
Order:
Suborder:
Trinucleina
Family:
Subfamily:
Endymioniinae
Genus:
Typhlokorynetes

Shaw, 1966[1]
Binomial name
Typhlokorynetes plana
(Raymond, 1937)
Synonyms
  • Warburgella plana Raymond, 1937
  • Raymondaspis (in part)

Typhlokorynetes plana is a species of small, button-shaped asaphid trilobites of the family Raphiophoridae that lived during the Early Tremadocian of Vermont, United States .

Etymology

The generic epithet is a compound word of the Greek words "Typhlos," meaning "blind," and "Korynetes," which means "club-bearer," in reference to the animal's eyeless state, and the glabellum that is shaped in the outline of a club or bowling pin.[1] The specific name "plana" refers to the flattened nature of the body.

History of taxonomy

The first fossils of this trilobite were described by P. E. Raymond in 1937 as a blind proetid that he named "Warburgella" plana.[2] In 1959, "W." plana would be redescribed by H. B. Whittington as a species of Raymondaspis in the family Styginidae.[3] Alan Shaw voiced a similar opinion when he moved it into its own genus and family, Typhlokorynetes in Typhlokorynetidae, in that it maybe a specialized styginid with unusual or aberrant sutures and hypostome anatomy.[1] During the 1970s, it was then reappraised as a relative of Endymion in Raphiophoridae.

Occurrence

Specimens are known from the Highgate Formation in northwestern Vermont.

References

  1. 1.0 1.1 1.2 Shaw, Alan B. "Paleontology of Northwestern Vermont. XII. Fossils from the Ordovician Highgate Formation." Journal of Paleontology (1966): 1312-1330.
  2. RAYMOND, P.E., 1937, Upper Cambrian and Lower Ordovician Trilobita and Ostracoda from Vermont: Geol. Soc. America, Bull., v. 48, p. 1079-1146, 4 pls
  3. WHITTINGTON, H. B., 1959a, Family Styginidae, in Treatise on invertebrate paleontology, pt. 0, Arthropoda 1: Lawrence, Kansas, Geol. Soc. America and Kansas Univ. Press, p. 365-367, Figs. 275-277

Wikidata ☰ Q104834163 entry