Trilobite and xiphosuran affinities for putative aglaspidid arthropods Caryon and Drabovaspis, Upper Ordovician, Czech Republic

Ortega‐hernández, Javier and Braddy, Simon J and Rak, Štěpán (2010) Trilobite and xiphosuran affinities for putative aglaspidid arthropods Caryon and Drabovaspis, Upper Ordovician, Czech Republic. Lethaia, 43 (3). pp. 427-431. ISSN 1502-3931 DOI 10.1111/j.1502-3931.2010.00216.x

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Abstract

The problematic arthropods Zonozoe draboviensis, Caryon bohemicum and Triopus draboviensis were originally described by Barrande (1872). Chlupáč (1963, 1965) revised Barrande’s material, and based a new genus and species, Drabovaspis complexa, on a single specimen formerly in Zonozoe. He regarded all these taxa as ‘merostomes of the Order Aglaspidida..., which is the oldest order of limulid arthropods of the Subclass Xiphosura...’ (Chlupáč 1965, p. 7) based on an overall resemblance. Much debate revolves around the diagnostic features and exact affinities of the Aglaspidida. Almost all arthropods that have been allied to this Order share a similar morphology, including a semicircular and convex cephalon devoid of facial sutures and a faint glabellar region. Most have a pair of anterior oval eyes, although blind forms are recorded (Fortey & Rushton 2003). Most of these taxa have not been the subject of further study except for occasional comparison with morphologically similar arthropods (e.g. Bergström 1968; Fortey & Rushton 2003; Van Roy 2006a; Rak et al. 2009).

Item Type: Article
Uncontrolled Keywords: 2011AREP; IA63;
Subjects: 04 - Palaeobiology
Divisions: 04 - Palaeobiology
Journal or Publication Title: Lethaia
Volume: 43
Page Range: pp. 427-431
Identification Number: 10.1111/j.1502-3931.2010.00216.x
Depositing User: Sarah Humbert
Date Deposited: 21 Oct 2011 16:34
Last Modified: 23 Jul 2013 10:02
URI: http://eprints.esc.cam.ac.uk/id/eprint/2214

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