Abstract
ABSTRACT A new gyracanthid Gyracanthides riniensis is described from the Famennian (latest Devonian) Waterloo Farm Lagerstätte in the Witpoort Formation, near Makhanda/Grahamstown, South Africa. The new species is based on disarticulated remains including pectoral, pelvic, and median fin spines, endoskeletal shoulder girdle elements, and squamation patches preserved on or close to the same bedding plane. The new taxon is distinguished by having a relatively large, ornate median spine, and arrowhead-shaped tubercular ornament on the spine ridges. The species shows closest resemblance in pectoral spine proportions to Gyracanthides murrayi from the earliest Carboniferous of Australia, and in spine tubercular ornament to its Laurussian contemporary “Gyracanthus” sherwoodi. It differs in spine proportions and ornament from the older (Givetian) and younger (early Carboniferous) gyracanthids found in nearby localities. http://zoobank.org/urn:lsid:zoobank.org:pub:ADF4869C-45DC-4854-9F27-37D490F6D388
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
