Revisão taxonômica e do registro fóssil de tartarugas marinhas não-Protostegidae do Cretáceo

• Ano de defesa: 2018
• Autor(a) principal: Moreira, Isadora Gerheim de Vasconcellos
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade Federal de Viçosa
• Palavras-chave em Português: Tartaruga-marinha; Biologia - Classificação; Paleobiogeografia; Tartarugas fósseis; Paleozoologia
• Link de acesso: https://locus.ufv.br//handle/123456789/28409

Fossil records of sea turtles from Cretaceous are found mainly in the clade Pan- Chelonioidea, but it also refers to a few species without a definitive phylogenetic relationship, currently considered Eucryptodira Indeterminate. The oldest record of Pan-Chelonioidea dates from the Aptian (Early Cretaceous) from Germany, which challenges the current hypothesis of the American origin for Americhelydia (Pan- Chelonioidea+ Chelydroidea) during the Campanian (Late Cretaceous). The records of Cretaceous marine turtles from the Old Word are scarce, but the distribution of stem Chelonioidea in North America were very abundant, following the coast of the Western Interior Seaway from Canada to south USA. All species of Pan-Chelonioidea from Cretaceous possessed limbs modified into paddles as adaptation for the marine environment, which allowed them to colonize small and large bodies of water. Their diet was variable, and the jaw specializations to shear and crush the food are present since the Late Campanian in stem Chelonioidea. Among the 45 named non- Protostegidae marine turtles from Cretaceous, 21 are nomina valida of Pan- Chelonioidea, 8 are nomina valida of Eucryptodira, 12 are nomina invalida, 5 are nomina nuda, 6 are nomina dubia, and 1 are nomen vanum.