Peracarida

Peracarida
Vremenski raspon: Gornji devon–sadašnjost, 365–0 Ma
Amfipod Bathyporeia elegans sa jajetom u svom marsupijumu
Naučna klasifikacija e
Carstvo: Animalia
Tip: Arthropoda
Klasa: Malacostraca
Potklasa: Eumalacostraca
Nadred: Peracarida
Calman, 1904 [1]

Nadred Peracarida je velika grupa rakova malakostraka, koji imaju pripadnike u morskim, slatkovodnim i kopnenim staništima. Oni su uglavnom definisani prisustvom vreće za leglo, ili marsupijuma, formiranog od tankih spljoštenih ploča (ostegita) koje se nalaze na krajnjim bazalnim segmentima nogu.[2] Peracarida je jedan od najvećih taksona rakova i obuhvata oko 12.000 vrsta. Većina članova je manja od 2 cm (0,8 in) u dužinu,[3] a najveći je verovatno džinovski izopod (Bathynomus giganteus) koji može da dostigne 76 cm (30 in). Najraniji poznati perekaridijan je bio Oxyuropoda ligioides, za čiji je fosil je utvrđeno da datira iz kasnog devona (pre više od 360 miliona godina) u Irskoj.[4]

Reference

  1. ^ W. T. Calman (1904). „On the Classification of the Crustacea Malacostraca”. Annals and Magazine of Natural History. 13 (74): 144—158. doi:10.1080/00222930408562451. 
  2. ^ G. C. B. Poore (2002). „Superorder: Peracarida Calman, 1905”. Crustacea: Malacostraca. Syncarida, Peracarida: Isopoda, Tanaidacea, Mictacea, Thermosbaenacea, Spelaeogriphacea. Zoological Catalogue of Australia. 19.2A. CSIRO Publishing. стр. 24—25. ISBN 978-0-643-06901-5. 
  3. ^ Ruppert, E. E.; Fox, R. S.; Barnes, R. D. (2004). Invertebrate Zoology, 7th edition. Cengage Learning. стр. 651—652. ISBN 978-81-315-0104-7. 
  4. ^ Robin, N.; Gueriau, P.; Luque, J.; Jarvis, D.; Daley, A. C.; Vonk, R. (2021). „The oldest peracarid crustacean reveals a Late Devonian freshwater colonization by isopod relatives”. Biology Letters. The Royal Society. 17 (6). ISSN 1744-957X. doi:10.1098/rsbl.2021.0226. 

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