A new look at an old Australian raptor places “ Taphaetus ” lacertosus de Vis 1905 in the Old World vultures (Accipitridae: Aegypiinae) Author Mather, Ellen K. 0000-0001-9437-1395 Palaeontology Group, College of Science and Engineering, Flinders University, GPO 2100, Adelaide, SA 5001, Australia & ellen. mather @ flinders. edu. au, math 0083 @ flinders. edu. au, https: // orcid. org / 0000 - 0001 - 9437 - 1395 Author Lee, Michael S. Y. 0000-0002-3905-0887 Palaeontology Group, College of Science and Engineering, Flinders University, GPO 2100, Adelaide, SA 5001, Australia & Earth Sciences Section, South Australian Museum, North Terrace, Adelaide 5000, Australia & mike. lee @ flinders. edu. au; https: // orcid. org / 0000 - 0002 - 3905 - 0887 mike.lee@flinders.edu.au Author Worthy, Trevor H. 0000-0001-7047-4680 Palaeontology Group, College of Science and Engineering, Flinders University, GPO 2100, Adelaide, SA 5001, Australia & trevor. worthy @ flinders. edu. au; https: // orcid. org / 0000 - 0001 - 7047 - 4680 trevor.worthy@flinders.edu.au text Zootaxa 2022 2022-07-20 5168 1 1 23 journal article 102626 10.11646/zootaxa.5168.1.1 4e90e71f-ff39-4569-8fdf-6f8f5edb73d1 1175-5326 6876161 82876DF7-905F-4005-9152-609B7CC41133 Cryptogyps Mather, Lee and Worthy 2022 gen. nov. http://zoobank.org/NomenclaturalActs/ 6CD1D60A-5B25-4431-8FB2-BD5EE5EAFE77 Type species: ‘ Taphaetus’ lacertosus de Vis, 1905 : Annals of the Queensland Museum 6: 4, pl. 1, fig. 1 . Etymology: The name is derived from a combination of the Ancient Greek words ‘ kryptós ’ (hidden) and ‘ gýps ’ (vulture), in reference to the fact that this taxon was known for over 100 years but was generally believed to be an eagle. Cryptogyps also relates to the word ‘crypt’, a word used to describe an underground burial chamber, referencing the discovery of the new material in caves. Revised diagnosis: A large accipitrid, similar in size to Aquila audax , with humeri differing from all other Accipitridae by the following combination of characters: (1) a prominent dorsal convexity of the facies between the tuberculum supracondylare dorsale and the epicondylus dorsalis; (2) a strongly dorsally projecting tuberculum supracondylare dorsale; (3) a distinct and deepened attachment for the origin of m. extensor digitorum communi; (4) a large, shallow, circular attachment scar for the origin of the proximal head of m. pronator superficialis (=pronator brevis); (5) t he epicondylus ventralis is strongly projected ventrally as a craniocaudally elongate peak; (6) t he processus flexorius is distally short, ending proximal to the distal margin of the condylus ventralis; (7) and it has a narrow sulcus/groove for the dorsal belly of the m. humerotricipitalis.