Tylodorhynchus, new genus of pterosaur from Cretaceous Wessex Formation in England
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Ben Creisler
Apr 13, 2026, 11:13:50 AMApr 13
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Ben Creisler
A new paper:
Tylodorhynchus rodriguesae gen. et comb. nov.
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R. V. Pêgas & Borja Holgado (2026)
A taxonomic note on a coloborhynchine pterosaur from the Early Cretaceous Wessex Formation: Tylodorhynchus rodriguesae gen. et comb. nov.
Historical Biology (advance online publication)
doi: https://doi.org/10.1080/08912963.2026.2650487
https://www.tandfonline.com/doi/full/10.1080/08912963.2026.2650487
urn:lsid:zoobank.org:pub:67E5DABC-2A58-4C83-A25E-4250A8238A80.
IWCMS 2014.82, previously described and designated as the holotype of ‘Uktenadactylus’ rodriguesae (Pterosauria, Anhangueridae, Coloborhynchinae), is redescribed with the aim of refining its anatomical interpretation and phylogenetic relationships. Although earlier works noted similarities to Uktenadactylus wadleighi, including a deltoid facet dorsal depression and a palatal protuberance, the nature of these traits are herein revised. We note that both structures differ significantly in morphology from those of U. wadleighi. The depression on the deltoid facet of IWCMS 2014.82 is shallow and poorly defined, contrasting with the deeper, rimmed versions seen in related taxa Uktenadactylus and Nicorhynchus. Similarly, the palatal protuberance, while superficially comparable to that of U. wadleighi, is morphologically distinct: rather than forming a sharp ridge derived from alveolar expansions, it is expressed as a bulbous knob separated from the first and second alveolar borders by gentle indentations. We further note that ‘U’. rodriguease lacks some features shared by U. wadleighi and Nicorhynchus spp. (such as an anterodorsal groove on the premaxillary crest), and reinterpret U. wadleighi as more closely related to Nicorhynchus spp. than to ‘U’. rodriguease. We accordingly reassign the latter to a new genus, as Tylodorhynchus rodriguease gen. et comb. nov.
R. V. Pêgas & Borja Holgado (2026)
A taxonomic note on a coloborhynchine pterosaur from the Early Cretaceous Wessex Formation: Tylodorhynchus rodriguesae gen. et comb. nov.
Historical Biology (advance online publication)
doi: https://doi.org/10.1080/08912963.2026.2650487
https://www.tandfonline.com/doi/full/10.1080/08912963.2026.2650487
urn:lsid:zoobank.org:pub:67E5DABC-2A58-4C83-A25E-4250A8238A80.
IWCMS 2014.82, previously described and designated as the holotype of ‘Uktenadactylus’ rodriguesae (Pterosauria, Anhangueridae, Coloborhynchinae), is redescribed with the aim of refining its anatomical interpretation and phylogenetic relationships. Although earlier works noted similarities to Uktenadactylus wadleighi, including a deltoid facet dorsal depression and a palatal protuberance, the nature of these traits are herein revised. We note that both structures differ significantly in morphology from those of U. wadleighi. The depression on the deltoid facet of IWCMS 2014.82 is shallow and poorly defined, contrasting with the deeper, rimmed versions seen in related taxa Uktenadactylus and Nicorhynchus. Similarly, the palatal protuberance, while superficially comparable to that of U. wadleighi, is morphologically distinct: rather than forming a sharp ridge derived from alveolar expansions, it is expressed as a bulbous knob separated from the first and second alveolar borders by gentle indentations. We further note that ‘U’. rodriguease lacks some features shared by U. wadleighi and Nicorhynchus spp. (such as an anterodorsal groove on the premaxillary crest), and reinterpret U. wadleighi as more closely related to Nicorhynchus spp. than to ‘U’. rodriguease. We accordingly reassign the latter to a new genus, as Tylodorhynchus rodriguease gen. et comb. nov.
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