Cylindroleberididae

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Cylindroleberididae
Temporal range: Lower Silurian–Recent
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Ostracoda
Order: Myodocopida
Superfamily: Cylindroleberidoidea
Müller, 1906
Family: Cylindroleberididae
Müller, 1906

Cylindroleberididae is a family of ostracods that shows remarkable morphological diversity. The defining feature is the possession of gills: 7–8 leaf-like pairs at the posterior of the body. Other features common to all species in the family include a "baleen-comb" on both the maxilla and the fifth limb, a sword-shaped coxal endite on the mandible, and the triaenid bristles on the basal endites of the mandible.[1]

Species of the Cylindroleberididae are found in marine areas, from shallow waters to depths of more than 4,500 metres (14,800 ft).[2] Most species are approximately 2 millimetres (0.08 in) long. In 2006, there were 219 described species.[3]

A fossil discovered in 2003 with preserved soft parts has been assigned to the Cylindroleberididae.[4] The fossil appears to have gills and is thought to date from 425 million years ago.[4]

References

  1. ↑ Erik Mellentin Poulsen (1965). "Ostracoda-Myodocopa Part 2 Cypridiniformes-Rutidermatidae, Sarsiellidae and Asteropidae". Dana Report No. 65 XII: 1–483. 
  2. ↑ Louis S. Kornicker (1981). "Revision, distribution, ecology, and ontogeny of the ostracode subfamily Cyclasteropinae (Myodocopina: Cylinderoleberididae)". Smithsonian Contributions to Zoology 319: 1–548. 
  3. ↑ Anna E. Syme & Gary C. B. Poore (2006). "A checklist of species of Cylindroleberididae (Crustacea:Ostracoda)" (PDF). Museum Victoria Science Reports 9: 1–20. Archived from the original on September 6, 2007. 
  4. ↑ 4.0 4.1 David J. Siveter, Mark D. Sutton, Derek E. G. Briggs & Derek J. Siveter (2003). "An ostracode crustacean with soft parts from the Lower Silurian" (PDF). Science 302 (5651): 1749–1751. doi:10.1126/science.1091376. PMID 14657495. 

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