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Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Myoida
Family: Pholadidae
Subfamily: Martesiinae
Genus: Pholadidea
Turton, 1819
Type species
Pholadidea loscombiana
Turton, 1819[1]
  • Cadmusia Leach in Gray, 1852
  • Pholameria Conrad, 1865
  • Talonella Gray, 1851

Pholadidea is a taxonomic genus of marine bivalve molluscs in the family Pholadidae (the piddocks). Most members of Pholididea bore into shale, soft rock and coral for shelter, with the exception of Pholididea (Hatasia) wiffenae, which is a wood-borer.[1]


The Pholididea are distinguished from the other genera in Martesiinae by having only on umbonal-ventral sulcus, a longitudinally-divided mesoplax, and either no metaplax and hypoplax, or a single plate caused by deposition of calcite in the periostratum.[1]


Pholididea is known from the Eocene to the Holocene, while the subgenus P. (Hatasia) is known only from the Holocene.[1] Species have been reported from the Palaeocene and Late Cretaceous, but these likely belong in other genera.[1]


The following taxonomic classifications exist in Pholididea:[1][2]



  • Pholadidea acutithyra Tchang, Tsi & Li, 1960 accepted as Penitella acutithyra Tchang, Tsi & Li, 1960
  • Pholadidea cheveyi Lamy, 1927 accepted as Aspidopholas ovum W. Wood, 1828
  • Pholadidea chishimana Habe, 1955 accepted as Penitella gabbii Tryon, 1863
  • Pholadidea dolichothyra Tchang, Tsi & Li, 1960 accepted as Penitella dolichothyra Tchang, Tsi & Li, 1960
  • Pholadidea minuscula Dall, 1908 accepted as Martesia fragilis Verrill & Bush, 1898
  • Pholadidea sagitta Dall, 1916 accepted as Penitella penita Conrad, 1837


  1. ^ a b c d e f Crampton, James S. (1990). "A New Species of Late-Cretaceous Wood-boring Bivalve from New Zealand" (PDF). Palaeontology. 33 (4): 981–992. 
  2. ^ a b Gofas, Serge; Bastien Tran, Phillipe Bouchet (2004–2011). "Pholadidea Turton, 1819". World Register of Marine Species. 

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