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  2. Crab - Wikipedia

    en.wikipedia.org/wiki/Crab

    Crab (Pachygrapsus marmoratus) on Istrian coast, Adriatic Sea. ... The vast number of brachyuran crabs have internal fertilisation and mate belly-to-belly. For many ...

  3. Cretaceous crab revolution - Wikipedia

    en.wikipedia.org/wiki/Cretaceous_Crab_Revolution

    The Cretaceous crab revolution was a major diversification event of brachyuran crustaceans (also known as true crabs) that took place during the Cretaceous period, from 145 to 66 million years ago. [ 1 ] [ 2 ] Nearly 80% of modern groups of crabs originated during this event. [ 3 ]

  4. Carcinisation - Wikipedia

    en.wikipedia.org/wiki/Carcinisation

    Carcinisation (American English: carcinization) is a form of convergent evolution in which non-crab crustaceans evolve a crab-like body plan. The term was introduced into evolutionary biology by L. A. Borradaile, who described it as "the many attempts of Nature to evolve a crab". [2]

  5. Selatium - Wikipedia

    en.wikipedia.org/wiki/Selatium

    Following fertilization, female crabs carry eggs on their abdomen during their early stages of development. [1] When they hatch, the eggs are released into the water where they will undergo five stages of juvenile development, four zoeal stages and 1 megalopa stage. [6] During all zoeal stages, the larvae live in brackish waters. [6]

  6. Mictyris brevidactylus - Wikipedia

    en.wikipedia.org/wiki/Mictyris_brevidactylus

    Mictyris brevidactylus is a species of crab found in Japan, China (including the type location, Hong Kong), Taiwan, Singapore, and parts of Indonesia (Karakelong, Bawean and Ambon Island). [2] The adults have a light-blue carapace and scarlet-jointed legs , while juveniles are yellowish-brown.

  7. Eocarcinus - Wikipedia

    en.wikipedia.org/wiki/Eocarcinus

    Since its ancestors were long-tailed decapods, and its successors were short-tailed crabs, Eocarcinus has been described as "the lobster who decided to become a crab". [5] Previously considered to be the oldest known true crab , a 2010 revision concluded that Eocarcinus could not be accommodated among the Brachyura, and was instead transferred ...

  8. Gecarcinucoidea - Wikipedia

    en.wikipedia.org/wiki/Gecarcinucoidea

    This Eubrachyura article is a stub. You can help Wikipedia by expanding it.

  9. Anomura - Wikipedia

    en.wikipedia.org/wiki/Anomura

    Anomura (sometimes Anomala) is a group of decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word crab, all true crabs are in the sister group to the Anomura, the Brachyura (the two groups together form the clade Meiura).