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Kasibelinurus Temporal range: 419-369 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ Early Devonian^[1] to Late Devonian^[2]

Images of Kasibelinurus fossils from the Devonian
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Order:	Xiphosura
Family:	†Kasibelinuridae
Genus:	†Kasibelinurus Pickett, 1993
Type species
Kasibelinurus amicorum^[3] Pickett, 1993

Kasibelinurus (meaning "sibling of dart tail" for its perceived relation to Belinurus at the time) is a genus of xiphosuran from the Devonian.^[4] It is part of the family Kasibelinuridae.^[5] The type species and only species of Kasibelinurus is K. amicorum (derived from Latin word amicus meaning 'friend'). The type species was set by J. Pickett in 1993.^[6]

Description

The genus Kasibelinurus was described by Pickett as having "Ophthalmic ridges effaced; precardiac field defined by anterior prolongations of the cardiac furrows; opisthosomal pleurae with distinct inner and outer zones." The same source later states that Kasibelinurus had a telson with restricted movement based on the shape of the opisthosoma.

References

^ Lamsdell, James C.; Xue, Jinzhuang; Selden, Paul A. (March 2013). "A horseshoe crab (Arthropoda: Chelicerata: Xiphosura) from the Lower Devonian (Lochkovian) of Yunnan, China". Geological Magazine. 150 (2): 367–370. Bibcode:2013GeoM..150..367L. doi:10.1017/S0016756812000891. hdl:1808/14491. ISSN 0016-7568.
^ "†Kasibelinurus Pickett 1993 (arthropod)". The Paleobiology Database.
^ Pickett, John (1993). "A Late Devonian xiphosuran from near Parkes, New South Wales" (PDF). Memoirs of the Association of Australasian Palaeontologists. 15: 279–287.
^ Lamsdell, James C. (2020-12-04). "The phylogeny and systematics of Xiphosura". PeerJ. 8: e10431. doi:10.7717/peerj.10431. ISSN 2167-8359. PMC 7720731. PMID 33335810.
^ Pickett, John (1993). "A Late Devonian xiphosuran from near Parkes, New South Wales" (PDF). Memoirs of the Association of Australasian Palaeontologists. 15: 279–287.
^ Lamsdell, James C. (2020-12-04). "The phylogeny and systematics of Xiphosura". PeerJ. 8: e10431. doi:10.7717/peerj.10431. ISSN 2167-8359. PMC 7720731. PMID 33335810.

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