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Raninidae
Description | Raninidae is a family of unusual crabs, sometimes known as "frog crabs", on account of their frog-like appearance. They are taken by most scientists to be quite primitive among the true crabs. They closely resemble the (unrelated) mole crabs, due to parallel evolution or convergent evolution. In both groups, the claws are modified into tools for digging, and the body is a rounded shape that is easy to bury in sand. Unlike most other true crabs, the abdomens of raninids are not curled under the cephalothorax. From Wikipedia article at https://en.wikipedia.org/wiki/Raninidae, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Source Data |
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Rank | family | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomy (GBIF,PBDB) | Life : Animalia : Arthropoda : Malacostraca : Decapoda : Raninidae | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Classification (PBDB,GBIF) |
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Scientific Name | Raninidae | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Opinions (PBDB) |
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Status (PBDB) | extant | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Taxon Size (PBDB) | 16 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Extant Size (PBDB) | 3 (19%) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
First Recorded Appearance | 70.6 - 66.0 Ma Late/Upper Cretaceous | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Motility | actively mobile (based on Malacostraca) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vision | well-developed (based on Malacostraca) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Diet | carnivore (based on Decapoda) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Taphonomy | chitin (based on Malacostraca) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Primary Reference (PBDB) | W. de Haan. 1833. Crustacea, p. 1-243, pls. A-J, L-Q, 1-55 IN Fauna Japonica. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Common Name(s) | Frog Crabs, Froschkrabben, アサヒガニ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Wikipedia | https://en.wikipedia.org/wiki/Raninidae |
External Images
Fossil Distribution
Subtaxa
Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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Cyrtorhininae subfamily | listed (PBDB) | 3 | 41.3 Ma Eocene | 0 Ma Extant | |
Symethinae ✝ subfamily | listed (PBDB) | 5 | 70.6 Ma Late/Upper Cretaceous | 16.0 Ma Miocene | |
Carinatus ✝ genus | accepted (GBIF) listed (PBDB) | 5 | 70.6 Ma Late/Upper Cretaceous | 16.0 Ma Miocene | |
Claudioranina ✝ genus | accepted (GBIF) listed (PBDB) | ||||
Cosmonotus genus | accepted (GBIF) listed (PBDB) | 2 | 2.59 Ma Pleistocene | 0 Ma Extant | |
Cyrtorhina genus | accepted (GBIF) listed (PBDB) | 3 | 41.3 Ma Eocene | 0 Ma Extant | |
Erroranilia ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 2.59 Ma Pleistocene | 2.59 Ma Pleistocene | |
Italianira genus | accepted (GBIF) | No associated record in PBDB | |||
Lophoraninella ✝ genus | accepted (GBIF) listed (PBDB) | ||||
Lyreidus genus | accepted (GBIF) listed (PBDB) | 42 | 56.0 Ma Paleocene | 0 Ma Extant | |
Lysirude genus | accepted (GBIF) | No associated record in PBDB | |||
Notopoides genus | accepted (GBIF) listed (PBDB) | 2 | 83.5 Ma Late/Upper Cretaceous | 0 Ma Extant | |
Notopus genus | accepted (GBIF) listed (PBDB) | 5 | 48.6 Ma Eocene | 0 Ma Extant | |
Notosceles genus | accepted (GBIF) listed (PBDB) | 8 | 101 Ma Late/Upper Cretaceous | 0 Ma Extant | |
Pseudorogueus ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 145 Ma Late Jurassic | 145 Ma Late Jurassic | |
Ranilia genus | accepted (GBIF) listed (PBDB) | 4 | 37.2 Ma Eocene | 0 Ma Extant | |
Ranina genus | accepted (GBIF) listed (PBDB) | 24 | 56.0 Ma Paleocene | 0 Ma Extant | |
Raninoides genus | accepted (GBIF) listed (PBDB) | 54 | 83.6 Ma Late/Upper Cretaceous | 0 Ma Extant | |
Symethis genus | accepted (GBIF) listed (PBDB) | 0 Ma Extant | |||
Umalia genus | accepted (GBIF) listed (PBDB) | 3 | 2.59 Ma Pleistocene | 0 Ma Extant | |
Vegaranina ✝ genus | accepted (GBIF) listed (PBDB) | 1 | 66.0 Ma Late/Upper Cretaceous | 66.0 Ma Late/Upper Cretaceous | |
Palaenotopus barroisi species | accepted (GBIF) | No associated record in PBDB |
Obsolete Names
Name | Source | Taxon Rank | Taxonomy |
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Notopterygia | GBIF | family | Animalia : Arthropoda : Malacostraca : Decapoda : Notopterygia |
Symethidae | GBIF | family | Animalia : Arthropoda : Malacostraca : Decapoda : Symethidae |
Raninellidae | GBIF | family | Animalia : Arthropoda : Malacostraca : Decapoda : Raninellidae |
Synonymy List
Year | Name and Author |
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1833 | Raninidae de Haan |
1926 | Raninidae Rathbun p. 88 |
1989 | Raninidae Feldmann p. 63 |
1992 | Raninidae Feldmann p. 943 |
1992 | Raninidae Feldmann and Keys p. 10 |
1992 | Raninidae Karasawa p. 1252 |
1993 | Raninidae Feldmann p. 204 |
1993 | Raninidae Karasawa p. 42 |
2000 | Raninidae Karasawa and Fudouji p. 244 |
2000 | Raninidae Schweitzer et al. p. 68 |
2001 | Raninidae Vega et al. p. 931 |
2002 | Raninidae Schweitzer and Feldmann p. 961 |
Year | Name and Author |
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2003 | Raninidae Collins et al. p. 198 |
2003 | Raninidae Feldmann et al. p. 152 |
2004 | Raninidae Beschin and Busulini p. 110 |
2005 | Raninidae Todd and Collins p. 68 |
2006 | Raninidae Schweitzer et al. p. 24 figs. Table 1 |
2007 | Raninidae Schweitzer et al. p. 3 |
2010 | Raninidae Schweitzer et al. |
2012 | Raninidae van Bakel et al. p. 70 |
2017 | Raninidae Luque et al. p. 8 |
2017 | Raninidae Pasini and Garassino p. 88 |
2019 | Raninidae Feldmann et al. |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!