VOLUMEN ESPECIAL 6

STVDIA PALAEOCHELONIOLOGICA 3

Jiménez Fuentes, E. & Broin, F.De (eds.)

1992

Cherepanov, G.O. (1989): New morphogenetic data on the Turtle Shell: Discusion on the origin of the horny and bony parts. Stvdia Geologica Salmanticensia, Vol. Espec. 6 (Stvdia Palaeocheloniologica 3): 924.

ABSTRACT: Researches on the ontogeny of turtles (Emys orbicularis and Testudo graeca) lead to reconsider the problem of the shell elaboration. Precise observations on the development of dermal ossifications and horny shields, which constitute the basic camponents of the shell, lead to reasses the problem of the paleontological origin of these structural elements in the Chelonia. The morphogenetic bases of the variability of shell bony and horny parts, as well as their phylogenetic significance, are briefly described.

Fuente, M.S. de la & Fernández, M.S. (1989): Notoemys laticentralis Cattoi & Freiberg, 1961 from the Upper Jurassic of Argentina: A member of the Infraorder Pleurodira (Cope, 1868). Stvdia Geologica Salmanticensia, Vol. Espec. 6 (Stvdia Palaeocheloniologica 3): 2532.

ABSTRACT: The jurassic turtle Notoemys laticentralis Cattoy & Freiberg, 1961, was referred to the Family Plesiochelyidae. This Family is icluded in the infraorder Cryptodira. After the study of a new specimen of Notoemys laticentralis from the Vaca Muerta Formation (Tithonian), Neuquén province, Argentina, we propose to include this taxon in the infraorder Pleurodira.

Yeh, H.K. (1990): Chengyuchelyidae, n.fam., Middle Jurassic Turtles of China. Stvdia Geologica Salmanticensia, Vol. Espec. 6 (Stvdia Palaeocheloniologica 3): 3340.

ABSTRACT. So far, two genera and three species of turtles, Chengyuchelys baenoides, C. zigongensis, and Xinjiangchelys junggarensis, have been reported respectively from the middle Jurassic of China. As there are few data known in the world, the familial systematics of these genera is still uncertain. In the present paper, after introducting these species, a new Family, Chegyuchelyidae, belonging to the Parvorder Paracryptodira, is proposed for them. The Family probably represents an early group near Glyptopsidae, and will be useful for the study of the early evolution of turtles.

Cooper, M.R. & Broadley, D.G. (1990): A new species of fossil Homopus (Cryptodira: Testudinidae) from South Africa. Stvdia Geologica Salmanticensia, Vol. Espec. 6 (Stvdia Palaeocheloniologica 3): 4155.

ABSTRACT. The first recorded fossil of the endemic South African tortoise Homopus is described from an uncertain horizon in the Albany district of the eastern Cape Province. It is named Homopus fenestratus sp. nov.

Índex taxorum (Stvdia Palaeocheloniologica 1-3). Stvdia Geologica Salmanticensia, Vol. Espec. 6 (Stvdia Palaeocheloniologica 3): 57-66.