An exceptionally preserved myodocopid ostracod from the Silurian of Herefordshire, UK.

Proceedings. Biological Sciences
D J SiveterM D Sutton

Abstract

An exceptionally preserved new ostracod crustacean from the Silurian of Herefordshire, UK, represents only the third fully documented Palaeozoic ostracod with soft-part preservation. Appendages, gills, gut system, lateral compound eyes and even a medial eye with a Bellonci organ are preserved, allowing assignment of the fossil to a new genus and species of cylindroleberidid myodocope (Myodocopida, Cylindroleberididae). The Bellonci organ is recorded for the first time in fossil ostracods. The find also represents a rare occurrence of gills in fossil ostracods and confirms the earliest direct evidence of a respiratory-cum-circulatory system in the group. The species demonstrates remarkably conserved morphology within myodocopes over a period of 425 Myr. Its shell morphology more closely resembles several families of myodocopes other than the Cylindroleberididae, especially the Cypridinidae and Sarsiellidae, thus questioning the utility of the carapace alone in establishing the affinity of fossil ostracods.

References

Sep 1, 1984·American Journal of Physical Anthropology·J R VaisnysD Pilbeam
Sep 28, 2000·Proceedings. Biological Sciences·P J OrrM D Sutton
Nov 13, 2001·Proceedings. Biological Sciences·M D SuttonD J Siveter
Dec 6, 2003·Science·David J SiveterDerek J Siveter
Apr 3, 2004·Proceedings. Biological Sciences·Derek E G BriggsDerek J Siveter
Oct 22, 2004·Nature·Derek J SiveterDavid J Siveter
Mar 1, 2005·Proceedings. Biological Sciences·Jerome C RegierRobert E Kambic
Jul 19, 2005·Proceedings. Biological Sciences·M D SuttonD J Gladwell
Aug 19, 2005·Nature·Mark D SuttonDerek J Siveter
Oct 26, 2005·Proceedings. Biological Sciences·Derek E G BriggsDerek J Siveter
Apr 8, 2006·Proceedings. Biological Sciences·M D SuttonDerek J Siveter
May 4, 2007·Proceedings. Biological Sciences·David J SiveterDerek E G Briggs
Jul 25, 2007·Proceedings. Biological Sciences·Derek J SiveterDavid J Siveter

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Citations

Dec 14, 2012·Proceedings. Biological Sciences·David J SiveterSarah C Joomun
Dec 14, 2011·PloS One·Mark WilliamsJean-Charles Massabuau
Jan 24, 2014·Proceedings. Biological Sciences·Derek J SiveterSarah Joomun
Mar 30, 2016·Marine Genomics·Isa Schön, Koen Martens
Mar 19, 2014·Current Biology : CB·David J SiveterDerek E G Briggs
Nov 9, 2018·Biology Letters·David J SiveterMark D Sutton

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