Cylindroleberididae

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.[2]

Cylindroleberididae
Temporal range: Lower Silurian–Recent
Ostracod
Scientific classification Edit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Arthropoda
Class:Ostracoda
Order:Myodocopida
Superfamily:Cylindroleberidoidea
Müller, 1906
Family:Cylindroleberididae
Müller, 1906
Subfamilies[1]
  • Asteropteroninae Kornicker, 1981
  • Cyclasteropinae Poulsen, 1965
  • Cylindroleberidinae Müller, 1906
  • Macroasteropteroninae Karanovic & Lörz, 2012
  • genera incertae sedis
    • Colymbosathon Siveter, Sutton, Briggs & Siveter, 2003
    • Juraleberis Vannier & Siveter, 1995
    • Nasunaris Siveter, Briggs, Siveter & Sutton, 2010
    • Pauline Siveter, Briggs, Siveter, Sutton & Joomun, 2012

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

A fossil discovered in 2003 with preserved soft parts has been assigned to the Cylindroleberididae.[5] The fossil appears to have gills and is thought to date from 425 million years ago.[5]

Subtaxa

Cylindroleberididae contains the following subfamilies and genera.[1]

  • Asteropteroninae Kornicker, 1981
    • Actinoseta Kornicker, 1958
    • Asteropteron Skogsberg, 1920
    • Asteropterygion Kornicker, 1981
    • Microasteropteron Poulsen, 1965
    • Omegasterope Kornicker, 1981
    • Pteromeniscus Kornicker, 1981
    • Siveterella Kornicker & Sohn, 2000
    • Triadocypris Weitschat, 1983
    • Triadogigantocypris Monostori, 1991
    • Asteropella Poulsen, 1965 (nomen nudum)
  • Cyclasteropinae Poulsen, 1965
    • Alphaleberis Kornicker, 1981
    • Amboleberis Kornicker, 1981
    • Cyclasterope Brady, 1897
    • Cycloleberis Skogsberg, 1920
    • Eocypridina Kesling & Ploch, 1960
    • Leuroleberis Kornicker, 1981
    • Mesoleberis Kornicker, van bakel, Fraaije & Jagt, 2006
    • Radiicypridina Bless, 1973
    • Tetraleberis Kornicker, 1981
  • Cylindroleberidinae Müller, 1906
    • Archasterope Poulsen, 1965
    • Asteropina Strand, 1928
    • Bathyleberis Kornicker, 1975
    • Bruuniella Poulsen, 1965
    • Cylindroleberis Brady, 1867
    • Diasterope Kornicker, 1975
    • Dolasterope Poulsen, 1965
    • Domromeus Kornicker, 1989
    • Empoulsenia Kornicker, 1975
    • Heptonema Poulsen, 1965
    • Homasterope Kornicker, 1975
    • Monasterope Kornicker, 1991
    • Parasterope Kornicker, 1975
    • Philippiella Poulsen, 1965
    • Polyleberis Kornicker, 1974
    • Postasterope Kornicker, 1986
    • Prionotoleberis Kornicker, 1974
    • Skogsbergiella Kornicker, 1975
    • Synasterope Kornicker, 1975
    • Xandarasterope Kornicker in Kornicker & Poore, 1996
    • Xenoleberis Kornicker, 1994
  • Macroasteropteroninae Karanovic & Lörz, 2012
    • Macroasteropteron Kornicker, 1994
  • genera incertae sedis
    • Colymbosathon Siveter, Sutton, Briggs & Siveter, 2003
    • Juraleberis Vannier & Siveter, 1995
    • Nasunaris Siveter, Briggs, Siveter & Sutton, 2010
    • Pauline Siveter, Briggs, Siveter, Sutton & Joomun, 2012

References

External links