Papasula Olson and Warheit 1988

• Main Author: Hume, Julian P.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Chordata; Aves; Suliformes; Sulidae; Papasula; Macronectes giganteus
• Online Access: https://doi.org/10.5281/zenodo.7863384; http://treatment.plazi.org/id/03A1C039E214FFCFFF084470FD94FBA7

Genus Papasula Olson and Warheit, 1988 Papasula abbotti Olson & Warheit, 1988, p. 10 Type (by monotypy) Osteological diagnosis and comparison. The following osteological characters in combination characterize the genus Papasula . The fossil specimens are much larger than those of species in most other marine bird genera occurring in the Mascarenes, including those in Oceanitidae, Phaethontidae, Laridae, Stercorariidae, and in all Procellariidae except Macronectes giganteus . Papasula abbotti is smaller than M. giganteus and all species of Diomedeidae. It differs from similar-sized Fregata ariel and F. minor as follows. Coracoid: smaller, more gracile, and processus lateralis much less extensive. Sternum: larger; in lateral view, sulcus articularis coracoideus bordered with a much larger labrum interna and tuberculum labri externa; in dorsal view, foramina pneumatici larger, much more extensive. Humerus: more gracile, much thinner in the shaft and particularly lacks a sharply angular crista deltopectoralis. Ulna: much smaller; cotyla dorsalis larger and directed distad; impressio brachialis much more excavated; papillae remigales much less pronounced. Tarsometatarsus: most notably by much larger size, extremely reduced in length and width in Fregata , and sulcus extensorius much more deeply excavated. The Papasula material described herein is further assigned to Sulidae by the characters identified in Olson & Warheit (1988), Steadman et al. (1988), and van Tets et al. (1988), who also mentioned diagnostic characters of the cranial and other parts of the postcranial skeleton not discussed here. Coracoid (Fig. 2; table 1) In Papasula , on dorsal surface, facies articularis humeralis rotated ventrolaterad, with processus procoracoideus directed sharply proximally; cotyla scapulae small; sulcus m. supracoracoidei large and oval, with numerous foramina pneumatici; shaft wide and deep; facies articularis sternalis deep and bordered proximally by a large crista; angulus medialis long projecting proximomedially; ...