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Brood care in a Silurian ostracod
David J. Siveter1,*, Derek J. Siveter2,3, Mark D. Sutton4
and Derek E. G. Briggs5

An exceptionally preserved new ostracod crustacean from the Silurian
of Herefordshire, England,
preserves eggs and possible juveniles within its carapace, providing
an unequivocal and unique view of
parental brood care in the invertebrate fossil record. The female
fossil is assigned to a new family and
superfamily of myodocopids based on its soft-part anatomy. It
demonstrates a remarkably conserved eggbrooding
reproductive strategy within these ostracods over 425 Myr. The
soft-tissue anatomy urges
extreme caution in classifying 'straight-hinged' Palaeozoic ostracods
based on the carapace alone and
fundamentally questions the nature of the shell-based Palaeozoic
ostracod record.
Keywords: brood care; exceptional preservation; Herefordshire
Lagersta¨tte; Myodocopa;
Ostracoda; Silurian