Biology:Leanchoilia

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Short description: Extinct genus of arthropods

Leanchoilia
Temporal range: Cambrian Stage 3–Middle Cambrian
Leanchoilia superlata study 2.jpg
Leanchoilia superlata
Leanchoilia superlata study.jpg
Reconstruction of Leanchoilia superlata
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Megacheira
Order: Leanchoilida
Størmer, 1944
Family: Leanchoiliidae
Raymond, 1935
Genus: Leanchoilia
Walcott, 1912
Species
  • Leanchoilia superlata Walcott, 1912 (type)
    • (= Bidentia difficilis Walcott, 1912)
  • Leanchoilia illecebrosa (Hou, 1987)
  • Leanchoilia obesa He et al., 2017
  • Leanchoilia persephone Simonetta, 1970
  • Leanchoilia protogonia Simonetta, 1970
  • Leanchoilia robisoni Babcock et al., 2012
  • Leanchoilia? hanceyi Briggs et al., 2008

(but see text)

Leanchoilia is a megacheiran arthropod known from Cambrian deposits of the Burgess Shale in Canada and the Chengjiang biota of China .[1]

Description

Restoration of Leanchoilia superlata

L. superlata was about 5 centimetres (2.0 in) long and had long, whip-like flagellae extending from its great appendages. Its internal organs are occasionally preserved within the substrate in three dimensions.[2][3]

Species

Seven species are tentatively accepted today: L. superlata (the type species), L. persephone and L. protogonia from the Burgess Shale, L. illecebrosa and L. obesa from the Chengjiang biota, ''L. robisoni from Kaili, and L.? hanceyi from the Spence Shale. L. superlata and L. persephone may however be examples of sexual dimorphism.[4][5][6]

Distribution

55 specimens of Leanchoilia are known from the Greater Phyllopod bed, where they comprise 0.1% of the community.[7]

See also

  • Paleobiota of the Burgess Shale
  • List of Chengjiang Biota species by phylum

References

  1. "Burgess Shale: Leanchoilia superlata (an arthropod)". Smithsonian Institution National Museum of Natural History. http://paleobiology.si.edu/burgess/leanchoilia.html. Retrieved 6 July 2017. 
  2. Nicholas J. Butterfield (2002). "Leanchoilia guts and the interpretation of three-dimensional structures in Burgess Shale-type fossils". Paleobiology 28 (1): 155–171. doi:10.1666/0094-8373(2002)028<0155:LGATIO>2.0.CO;2. http://paleobiol.geoscienceworld.org/cgi/reprint/28/1/155. 
  3. Brigitte Schoenemann & Euan N. K. Clarkson (2012). "The eyes of Leanchoilia". Lethaia 45 (4): 524–531. doi:10.1111/j.1502-3931.2012.00313.x. 
  4. Diego C. García-Bellido & Desmond Collins (2007). "Reassessment of the genus Leanchoilia (Arthropoda, Arachnomorpha) from the Middle Cambrian Burgess Shale, British Columbia, Canada". Palaeontology 50 (3): 693–709. doi:10.1111/j.1475-4983.2007.00649.x. Bibcode2007Palgy..50..693G. 
  5. Liu, Yu; Hou, Xian-Guang; Bergström, J. (2007). "Chengjiang arthropod Leanchoilia illecebrosa (Hou, 1987) reconsidered". GFF 129 (3): 263–272. doi:10.1080/11035890701293263. https://www.researchgate.net/publication/258447213. 
  6. He, Yu-Yang; Cong, Pei-Yun; Liu, Yu; Edgecombe, Gregory D.; Hou, Xian-Guang (2017). "Telson morphology of Leanchoiliidae (Arthropoda: Megacheira) highlighted by a new Leanchoilia from the Cambrian Chengjiang biota". Alcheringa: An Australasian Journal of Palaeontology 41 (4): 581–589. doi:10.1080/03115518.2017.1320425. https://www.researchgate.net/publication/318755039. 
  7. Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS 21 (5): 451–65. doi:10.2110/palo.2003.P05-070R. Bibcode2006Palai..21..451C. 

External links

Wikidata ☰ Q3015823 entry