Calymene

Calymene
Temporal range: Tremadocian-Pragian
~489–409 Ma
Calymene clavicula 32mm, Henryhouse Formation, Oklahoma, Cayugan
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: †Trilobita
Order: †Phacopida
Family: †Calymenidae
Genus: †Calymene
Brongniart, 1822
Type species
Calymene blumenbachii
Brongniart, 1822 [1]

Calymene Brongniart, 1822, is a genus of trilobites in the order Phacopida, suborder Calymenina, that are found throughout North America, North Africa, and Europe in primarily Silurian outcrops.[2] Calymene is closely related to Flexicalymene, and both genera are frequently found enrolled.[3] Calymene trilobites are small, typically 2 cm in length. The cephalon is the widest part of the animal and the thorax usually has 13 segments.[4]

The correct genus authorship is Brongniart (1822).[5] A previously published genus description in Desmarest (1816)[6] (often mis-cited as "Calymena" Desmarest, 1817) was suppressed by ICZN Opinion 1433.

  1. ^ Cite error: The named reference Siveter was invoked but never defined (see the help page).
  2. ^ "†Calymene Muenster 1840 (trilobite)". The Paleontology Database. Archived from the original on 2012-07-20. Retrieved April 29, 2012.
  3. ^ John P. Rafferty, ed. (2010). The Paleozoic Era: Diversification of Plant and Animal Life. Geologic History of Earth. Britannica Educational Publishing. ISBN 978-1-61530-196-6.
  4. ^ Milson, C.; Rigby, S. (2004). Fossils at a Glance. Oxford: Blackwell Science Ltd.
  5. ^ Brongniart, A. 1822. Les Trilobites. pp. 1-65, pls. 1-4 in: Histoire Naturelle des Crustacés Fossiles. Paris. F.-G. Levrault, Libraire. 154 pp. 11 pls.
  6. ^ Desmarest, A-G. 1816. Calymène. pp. 49-50 in: Nouveau Dictionnaire d'Histoire Naturelle, Nouvelle Edition, Tome 5.