Journal article
The lichid trilobite Radiolichas in the Silurian of Arctic Canada and Gotland, Sweden
Geological magazine, Vol.133(2), pp.147-158
03/1996
DOI: 10.1017/S0016756800008669
Abstract
Radiolichas has been a poorly known and exclusively Devonian genus of very limited diversity. Radiolichas raydaviesi sp. nov. and R. davedaviesi sp. nov. are the best-known members of the genus, and extend its stratigraphic and geographic range to the Wenlock of the central Canadian Arctic. A further Silurian occurrence is an unnamed species from the Wenlock Slite Beds of Gotland, Sweden. Radiolichas is most similar to Dicranogmus. Together, the genera lack any of the robust trochurine apomorphies (linear pygidial postaxial ridge, prominent pygidial border, prominent cranidial fossula) and appear to fall outside the phylogenetic structure of that subfamily. They are similar to members of the Tetralichinae, particularly in pygidial features, but lack the composite cranidial lobe characteristic of that subfamily. Their systematic position is presently unresolved.
Details
- Title: Subtitle
- The lichid trilobite Radiolichas in the Silurian of Arctic Canada and Gotland, Sweden
- Creators
- Jonathan M Adrain - Natural History Museum AarhusLars Ramsköld - Uppsala University
- Resource Type
- Journal article
- Publication Details
- Geological magazine, Vol.133(2), pp.147-158
- Publisher
- Cambridge University Press
- DOI
- 10.1017/S0016756800008669
- ISSN
- 0016-7568
- eISSN
- 1469-5081
- Number of pages
- 12
- Language
- English
- Date published
- 03/1996
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984229169602771
Metrics
11 Record Views