Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

Sexual dimorphism within the stem-group arthropod Isoxys volucris from the Sirius Passet Lagerstätte, North Greenland.

Nielsen, M.L. and Rasmussen, J.A. and Harper, D.A.T. (2017) 'Sexual dimorphism within the stem-group arthropod Isoxys volucris from the Sirius Passet Lagerstätte, North Greenland.', Bulletin of the Geological Society of Denmark., 65 . pp. 47-58.

Abstract

Morphometric analyses carried out on 126 specimens of the early Cambrian (Cambrian Series 2, Stage 3) stem-group arthropod Isoxys volucris from North Greenland reveal a bimodal distribution, where Morphogroup A is characterised by a significantly wider doublure than Morphogroup B. The dimorphism is interpreted as intraspecific variation related to gender (sexual dimorphism), where the relative numbers of individuals within the two morphogroups are equal (ratio 1:1). The discovery of established sexual dimorphism in Isoxys may have implications for the taxonomic discrimination of other stemgroup arthropods within the morphologically diverse and disparate animals of the early Cambrian.

Item Type:Article
Full text:(VoR) Version of Record
Download PDF
(2074Kb)
Status:Peer-reviewed
Publisher Web site:http://2dgf.dk/publikationer/bulletin/bulletin-volume-65-2017/
Publisher statement:© 2017 by Bulletin of the Geological Society of Denmark
Date accepted:05 May 2017
Date deposited:31 July 2017
Date of first online publication:05 July 2017
Date first made open access:No date available

Save or Share this output

Export:
Export
Look up in GoogleScholar