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Science 5 December 2003:
Vol. 302. no. 5651, pp. 1749 - 1751
DOI: 10.1126/science.1091376
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Reports

An Ostracode Crustacean with Soft Parts from the Lower Silurian

David J. Siveter,1* Mark D. Sutton,2 Derek E. G. Briggs,3 Derek J. Siveter2,4

An exceptionally well-preserved ostracode from the Silurian of Herefordshire, United Kingdom, provides a rare view of the fossilized soft-part anatomy of this important group of living crustaceans and confirms that Ostracoda were extant in the Paleozoic. The fossil has striking similarity to the extant myodocopid family Cylindroleberididae, to which it is assigned, and demonstrates remarkable evolutionary stasis over 425 million years. The fossil is identified as a male on the basis of its copulatory organ.

1 Department of Geology, University of Leicester, Leicester LE1 7RH, UK.
2 Department of Earth Sciences, University of Oxford, Parks Road, Oxford OX1 3PR, UK.
3 Department of Geology and Geophysics, Yale University, Post Office Box 208109, New Haven, CT 06520–8109, USA.
4 Geological Collections, University Museum of Natural History, Oxford OX1 3PW, UK.

* To whom correspondence should be addressed. E-mail: djs{at}leicester.ac.uk

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Exceptionally preserved lacustrine ostracods from the Middle Miocene of Antarctica: implications for high-latitude palaeoenvironment at 77{degrees} south.
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A Silurian 'marrellomorph' arthropod.
D. J Siveter, R. A Fortey, M. D Sutton, D. E.G Briggs, and D. J Siveter (2007)
Proc R Soc B 274, 2223-2229
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Proc R Soc B 274, 2099-2108
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Brood care in a Silurian ostracod.
D. J Siveter, D. J Siveter, M. D Sutton, and D. E.G Briggs (2007)
Proc R Soc B 274, 465-469
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Fossilized soft tissues in a Silurian platyceratid gastropod.
M.D Sutton, D.E.G Briggs, D. J Siveter, and D. J Siveter (2006)
Proc R Soc B 273, 1039-1044
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Metamorphosis in a Silurian barnacle.
D. E.G Briggs, M. D Sutton, D. J Siveter, and D. J Siveter (2005)
Proc R Soc B 272, 2365-2369
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Biogeography of Luminous Marine Ostracod Driven Irreversibly by the Japan Current.
K. Ogoh and Y. Ohmiya (2005)
Mol. Biol. Evol. 22, 1543-1545
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A starfish with three-dimensionally preserved soft parts from the Silurian of England.
M.D Sutton, D.E.G Briggs, D. J Siveter, D. J Siveter, and D.J Gladwell (2005)
Proc R Soc B 272, 1001-1006
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