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Proc Biol Sci. 2005 Nov 22;272(1579):2365-9.

Metamorphosis in a Silurian barnacle.

Author information

1
Yale University, Department of Geology and Geophysics, PO Box 208109, New Haven, CT 06520-8109, USA. derek.briggs@yale.edu

Abstract

Exceptionally preserved fossils from the Wenlock Series (Silurian) of Herefordshire, UK, provide unique evidence of metamorphosis from free-swimming cyprid larva to attached juvenile in a Palaeozoic barnacle. The larva had large brush-like anterior limbs. The juvenile shows the head transformed into a stalk and the development of the primordial condition of five mineralized plates within the carapace. The discovery of a cyprid larva indicates that crown group cirripedes had evolved by the Silurian.

PMID:
16243697
PMCID:
PMC1559965
DOI:
10.1098/rspb.2005.3224
[Indexed for MEDLINE]
Free PMC Article

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