Universität zu Köln

Schoenemann, Brigitte and Clarkson, Euan N. K. (2015). EYES AND VISION IN THE COEVAL FURONGIAN TRILOBITES SPHAEROPHTHALMUS ALATUS (BOECK, 1938) AND CTENOPYGE (MESOCTENOPYGE) TUMIDA WESTERGARD, 1922, FROM BORNHOLM, DENMARK. Paleontology, 58 (1). S. 133 - 141. HOBOKEN: WILEY-BLACKWELL. ISSN 1475-4983

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Abstract

The two olenid species Sphaerophthalmus alatus (Boeck, 1838) and Ctenopyge (Mesoctenopyge) tumida Westergard, 1922, occur together in the Ctenopyge tumida Zone (Zone 19) of the Furongian of Scandinavia. Material from Bornholm, Denmark, forms the basis of this study of the morphology and partial ontogeny of the eyes. The eyes of both species are directed laterally and have virtually panoramic vision, looking out sideways like those of a rabbit. The eye of S.alatus is comparatively smaller, with fewer lenses and a larger eye parameter; calculations show that this trilobite was adapted for dim light intensity, possibly suggesting a vagrant benthic habit. Ctenopyge (Mesoctenopyge) tumida, with a smaller eye parameter, was adapted for a higher light intensity, and this trilobite was most likely a pelagic swimmer. The two species, although preserved together, inhabited different levels in the water column.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schoenemann, Brigitte UNSPECIFIED UNSPECIFIED UNSPECIFIED Clarkson, Euan N. K. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-417776
DOI:	10.1111/pala.12128
Journal or Publication Title:	Paleontology
Volume:	58
Number:	1
Page Range:	S. 133 - 141
Date:	2015
Publisher:	WILEY-BLACKWELL
Place of Publication:	HOBOKEN
ISSN:	1475-4983
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CAMBRIAN ALUM SHALES; OLENID TRILOBITE; COMPOUND EYES; SWEDEN; ONTOGENY; VASTERGOTLAND; SCHIZOCHROAL; ARTHROPODS; DESIGN; SKANE Multiple languages Paleontology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/41777