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Kentisuchus
''Kentisuchus'' is an extinct genus of tomistomine crocodylian. It is considered one of the most basal members of the subfamily. Fossils have been found from England that date back to the early Eocene. There is also evidence that suggests that the genus was also present in Ukraine at the time, although material found from the Ukrainian locality cannot be referred to any particular species.〔Efimov, M. B. (1993). The Eocene crocodiles of the GUS — a history of development. ''Kaupia'' 3:23–25.〕
==Species==
The genus ''Kentisuchus'' was constructed by Charles Mook in 1955 as a replacement name for the basal tomistomine ''"Crocodylus" spenceri'', named by William Buckland in 1836.〔Mook, C. C. (1955). Two new genera of Eocene crocodilians. ''American Museum Novitates'' 1727:1-4.〕〔Buckland, W. (1836). ''Geology and Mineralogy Considered with Reference to Natural Theology''. 618 pp. Pickering, London.〕 Buckland named ''"Crocodylus" spenceri'' on the basis of a partial skull found from the Isle of Sheppey in Kent, England. Another tomistomine known as ''"Crocodylus" toliapicus'' was later described by Richard Owen, who considered it synonymous with ''“Crocodylus” spenceri'' yet kept the new name. In 1888 Richard Lydekker considered ''"C." toliapicus'' synonymous with two other known crocodilians, ''"C." champsoides'', named by Owen, and ''"C." arduini'', named by De Zigno, and reapplied the name ''"C." spenceri'' to all of these species.〔De Zigno, A. (1880). Sopra un cranio di coccodrillo scoperto nel terreno Eoceno del Veronese. ''Mem. R. Accad. Lincei, ser. 3, Cl. Sci. Fip., Mat., Nat., vol. 5'', pp. 65-72.〕〔Lydekker, R.
(1888). ''Catalogue of the fossil Reptilia in the British Museum''. London, pp. 60-63.〕
The genus name ''Kentisuchus'' was constructed only after it was realized that these tomistomine specimens were clearly distinct from the genus ''Crocodylus'' and that some specimens originally assigned to ''"C." spenceri'' belonged to entirely different genera and species. ''"C." arduini'' was reassigned to the new genus ''Megadontosuchus'' in the same paper that ''Kentisuchus'' was first described in. ''"C." toliapicus'' and ''"C." champsoides'' were both found to be species of ''Kentisuchus'', the former being considered the type species. ''"C." spenceri'' has provisionally been referred to ''Kentisuchus'' as well.〔Brochu, C. A. (2007). Systematics and taxonomy of Eocene tomistomine crocodylians from Britain and Northern Europe. ''Palaeontology'' 50(4):917-928〕
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