carcinisation

Porcellanids are, after brachyuran crabs, the most successful decapod group to achieve a crab-like body form through carcinisation. Unlike brachyurans, porcellanids retained the ability to swim by flapping their abdomen, armed with a well developed tail fan. Here, we present an exceptional case of carcinisation, with the South-American porcellanid, Allopetrolisthes spinifrons, an obligatory commensal of the sea-anemone species Phymactis papillosa and Phymanthea pluvia.

2010, Alexandra Hiller, Carlos Antonio Viviana, Bernd Werding, “Hypercarcinisation: An Evolutionary Novelty in the Commensal Porcellanid Allopetrolisthes spinifrons (Crustacea: Decapoda: Porcellanidae)”, in Nauplius^(https://web.archive.org/web/20120425232740/http://www.crustacea.org.br/artigos/728_25_18(1)_95-102_-_Hiller,_Viviani,_Werding.pdf), volume 18, number 1, São Paulo, Brazil: Sociedade Brasileira de Cancerologia, →ISSN, →OCLC, archived from the original on 25 Apr 2012, abstract, page 95

Porcelain crabs (Galatheoidea: Porcellanidae) and the hairy stone crab (Lomisoidea: Lomisidae) are also highly carcinised. They represent two additional independent instances of carcinisation within the Anomura, although their derivation has received much less attention than that of the king crabs.

2011, Shane T[imothy] Ahyong, Kareen A. Schnabel, Enrique Macpherson, “Phylogeny and Fossil Record of Marine Squat Lobsters”, in Gary C. B. Poore, Shane T. Ahyong, Joanne Taylor, editors, The Biology of Squat Lobsters, Collingwood, Vic.: CSIRO Publishing; Boca Raton, Fla.: CRC Press, →ISBN, page 78, column 1