Leanchoilia
Temporal range: Cambrian Stage 3–Middle Cambrian
Leanchoilia superlata
Reconstruction of Leanchoilia superlata
Scientific classification Edit this classification
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

References

  1. ^ "Burgess Shale: Leanchoilia superlata (an arthropod)". Smithsonian Institution National Museum of Natural History. 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. S2CID 85606166.
  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. Bibcode:2007Palgy..50..693G. doi:10.1111/j.1475-4983.2007.00649.x.
  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. S2CID 84150456.
  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. S2CID 90593555.
  7. ^ Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. Bibcode:2006Palai..21..451C. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022. S2CID 53646959.

External links


Megacheira
Taxon identifiers
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