PROFILPELAJAR.COM

Symethis

Symethis
Temporal range: Paleogene–Recent
Preserved specimen of S. variolosa
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Arthropoda
Clade: Pancrustacea
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Brachyura
Family: Raninidae
Subfamily: Symethinae
Goeke, 1981
Genus: Symethis
Weber, 1795
Species

Symethis is a genus of crabs. It differs from other genera in the family Raninidae by the lack of ornamentation of the male first pleopods and by the reduced number of gills (7 pairs rather than 8 pairs), and is therefore placed in a separate subfamily, Symethinae.[1]

There are three extant species:[2]

One further species,[4] Symethis johnsoni is known from fossils of Paleogene age,[5] but may belong in the subfamily Lyreidinae rather than in Symethis.[5]

References

  1. ^ a b c Gary D. Goeke (1981). "Symethinae, new subfamily, and Symethis garthi new species, and the transfer of Raninoides ecuadorensis to Notosceles (Raninidae: Brachyura: Gymnopleura)". Proceedings of the Biological Society of Washington. 93 (4): 971–981.
  2. ^ Peter Davie (2010). "Symethis Weber, 1795". WoRMS. World Register of Marine Species. Retrieved January 1, 2012.
  3. ^ P. J. F. Davie (1989). "Smethis corallica sp. nov. (Crustacea, Brachyura, Raninidae), the first member of the Smethinae to be recorded" (PDF). Bulletin du Muséum National d'Histoire Naturelle. 4th. 11 (A2): 425–430.
  4. ^ 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.
  5. ^ a b David A. Waugh, Rodney M. Feldmann & Carrie E. Schweitzer (2009). "Systematic evaluation of raninid cuticle microstructure" (PDF). Bulletin of the Mizunami Fossil Museum. 35: 15–41.


Stub icon

This Raninoida article is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.