Article · Wikipedia archive · Last revised Jul 22, 2026

Raninoida

Raninoida is a taxonomic section of the crabs, containing a single extant superfamily, Raninoidea, and two extinct, Necrocarcinoidea and Palaeocorystoidea. This group of crabs is unlike most, with the abdomen not being folded under the thorax. As of 2009, it comprised 46 extant species, and nearly 200 species known only from fossils.

Last revised
Jul 22, 2026
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Raninoida
Lyreidus tridentatus
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Clade: Pancrustacea
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
De Haan, 1839 1
Section: Raninoida
De Haan, 1839
Superfamilies
  • Raninoidea
  • †Necrocarcinoidea
  • †Palaeocorystoidea

Raninoida is a taxonomic section of the crabs, containing a single extant superfamily, Raninoidea, and two extinct, Necrocarcinoidea and Palaeocorystoidea.2 This group of crabs is unlike most, with the abdomen not being folded under the thorax. As of 2009, it comprised 46 extant species, and nearly 200 species known only from fossils.1

Classification

Below is a cladogram showing Raninoidea's placement within Brachyura:34

Brachyura

The following subgroups are contained in section Raninoida:2

  • Superfamily Raninoidea De Haan, 1839
    • Family Lyreididae Guinot, 1993
    • Family Raninidae De Haan, 1839
  • Superfamily †Necrocarcinoidea Förster, 1968
    • Family †Camarocarcinidae Feldmann, Li & Schweitzer, 2007
    • Family †Cenomanocarcinidae Guinot, Vega & Van Bakel, 2008
    • Family †Moravocarcinidae Van Bakel, Fraaije, Jagt & Skupien, 2020
    • Family †Necrocarcinidae Förster, 1968
    • Family †Orithopsidae Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross, 2003
    • Family †Paranecrocarcinidae Fraaije, Van Bakel & Jagt & Artal, 2008
  • Superfamily †Palaeocorystoidea Lőrenthey in Lőrenthey & Beurlen, 1929
    • Family †Palaeocorystidae Lőrenthey in Lőrenthey & Beurlen, 1929
References

References

  1. Sammy De Grave; N. Dean Pentcheff; Shane T. Ahyong; et al. (2009). "A classification of living and fossil genera of decapod crustaceans" (PDF). Raffles Bulletin of Zoology. Suppl. 21: 1–109. Archived from the original (PDF) on 2011-06-06. Retrieved 2010-01-09.
  2. "Raninoida". DecaNet. World Register of Marine Species. Retrieved 2026-02-22.
  3. Ling Ming Tsang; Christoph D. Schubart; Shane T. Ahyong; Joelle C.Y. Lai; Eugene Y.C. Au; Tin-Yam Chan; Peter K.L. Ng; Ka Hou Chu (2014). "Evolutionary History of True Crabs (Crustacea: Decapoda: Brachyura) and the Origin of Freshwater Crabs". Molecular Biology and Evolution. 31 (5). Oxford University Press : 1173–1187. doi:10.1093/molbev/msu068.
  4. Wolfe, Joanna M.; Breinholt, Jesse W.; Crandall, Keith A.; Lemmon, Alan R.; Lemmon, Emily Moriarty; Timm, Laura E.; Siddall, Mark E.; Bracken-Grissom, Heather D. (24 April 2019). "A phylogenomic framework, evolutionary timeline and genomic resources for comparative studies of decapod crustaceans". Proceedings of the Royal Society B. 286 (1901). doi:10.1098/rspb.2019.0079. PMC 6501934. PMID 31014217.