Cloacaspis

Cloacaspis
Temporal range: Early Arenig[1]
Cloacaspis senilis, and C. ekphymosa
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Trilobita
Order:
Ptychopariida
Suborder:
Olenina
Superfamily:
Olenoidea
Family:
Olenidae
Genus:
Cloacaspis

Fortey 1974 [2]

Cloacaspis is an extinct genus of Olenid Ptychopariid trilobite. It lived during the early part of the Arenig stage of the Ordovician Period,[1] a faunal stage which lasted from approximately 478 to 471 million years ago. Richard Fortey has proposed that these particular trilobites lived in anoxic regions of the ocean floor, and cultivated symbiotic, sulfur-metabolizing bacteria.[3]

  1. ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Trilobita entry)". Bulletins of American Paleontology. 364: 560. Archived from the original on 2006-09-05. Retrieved 2008-01-12.
  2. ^ Fortey, R.A., "The Ordovician Trilobites of Spitsbergen" [1]
  3. ^ Fortey, Richard. Trilobite! Eyewitness to Evolution Random House Inc, 2001 p 70