Skip to main content

The occipital region in the basal bony fish Erpetoichthys calabaricus (Actinopterygii: Cladistia)

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Erpetoichthys calabaricus has unusual cranio-vertebral anatomy, with an occipital centrum forming a component part of the compound basiexoccipital bone, and a ‘free-floating’ occipital neural arch that differs from accessory arches found in some teleosts. The occipital neural arch bears autapomorphic lateral projections that articulate with small rod-like bones resembling the spatial relationship of parapophyses and ribs, a feature normally restricted to vertebral centra. Based on analyses of cleared and stained specimens, computed tomography and histology, it is hypothesized that the lateral projections and associated rod-shaped bones are structures that share developmental homologies to the unique ‘dorsal ribs’ of Polypteridae.

Keywords: Polypterus; horizontal septum; intermusculars; myosepta

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1095-8649.2008.02007.x

Affiliations: Department of Geology, Amherst College, Amherst, MA 01002, U.S.A.

Publication date: September 1, 2008

bsc/jfb/2008/00000073/00000004/art00024
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more