Kiaeropterus (Eurypterida; Stylonurina) recognised from the Silurian of the Pentland Hills

Tetlie, O. E. and Anderson, L. I. and Poschmann, M. (2007) Kiaeropterus (Eurypterida; Stylonurina) recognised from the Silurian of the Pentland Hills. Scottish Journal of Geology, 43 (1). pp. 1-7. ISSN ISSN 0036-9276 DOI https://doi.org/10.1144/0036-9276/01-283

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Abstract

Eurypterus cyclophthalmus Laurie, 1892 from the Llandovery of the Pentland Hills, Scotland, is redescribed and assigned to the stylonurid eurypterid genus Kiaeropterus Waterston, 1979, previously only known from Kiaeropterus ruedemanni (Størmer, 1934) from the Wenlock of Norway. Another species previously assigned to Kiaeropterus, K. otisius Clarke 1907, is reassigned to the previously monotypic genus Clarkeipterus Kjellesvig-Waering 1966. The genus Kiaeropterus shares a previously unrecognized synapomorphy with the genus Brachyopterus Størmer 1951, namely a large bulbous `ocellar area'. In Kiaeropterus this area is cardioid whereas it is triangular in Brachyopterus. The two genera also share a number of less significant characters such as large anteriorly converging crescentic eyes, a lack of cuticular ornament and podomeres of the prosomal appendages with pronounced ridges, supporting a phylogenetic relationship between Kiaeropterus and Brachyopterus.

Item Type:	Article
Uncontrolled Keywords:	NIL AREP 2007
Subjects:	04 - Palaeobiology
Divisions:	04 - Palaeobiology
Journal or Publication Title:	Scottish Journal of Geology
Volume:	43
Page Range:	pp. 1-7
Identification Number:	https://doi.org/10.1144/0036-9276/01-283
Depositing User:	Sarah Humbert
Date Deposited:	16 Feb 2009 13:03
Last Modified:	23 Jul 2013 10:08
URI:	http://eprints.esc.cam.ac.uk/id/eprint/726

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