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Dicranurus - Wikipedia, the free encyclopedia

Dicranurus

From Wikipedia, the free encyclopedia

Dicranurus
Fossil range: Devonian
Dicranurus monstrosus
Dicranurus monstrosus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Trilobita
Order: Lichida
Moore, 1959
Family: Odontopleuridae
Genus: Dicranurus
species
  • D. hamatus
  • D. elegans
  • D. monstrosus

Dicranurus ("Twin head-tail") was a genus of Lower Devonian lichid trilobites that lived in a shallow sea that lay between Euramerica and Gondwanaland, corresponding to modern-day Oklahoma and Morocco, respectively. As such, their fossils are found in Oklahoma and Morocco.

Their bodies averaged about an inch or so, in length, though their large spines made them at least 2 inches in length. It is speculated that such tremendous spines hampered the ability of predators, such as arthrodire placoderms, to attack them, as well as to help prevent them from sinking into the soft mud of their environment. Dicranurus trilobites are distinguished from other lichids by the pair of large, curled, horn-like spines that emanate from behind the glabellum. The genus name refers to these distinctive horns, in fact.

[edit] External links

  • Description of Haragan Formation, Oklahoma [1]
  • Fossil Mall's description of D. elegans [2]
  • Fossil Mall's description of D. hamatus [3]
  • Fossil Museum's description of D. monstrosus [4]
This arthropod-related article is a stub. You can help Wikipedia by expanding it.


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