Results 31 to 40 of about 306 (166)

The fossil record of turtles and tortoises (Testudines) of Mexico, Central America and the Caribbean Islands, with comments on its taxonomy and paleobiogeography: a bibliographic review

open access: yesRevista Mexicana de Ciencias Geológicas, 2020
Testudines is the crown-group that includes all living forms of turtles and their closest relatives. This group is known from the late Triassic and persists to this day.
Gerardo Carbot-Chanona   +3 more
doaj   +1 more source

A global phylogeny of Pelomedusoides turtles with new material of Neochelys franzeni Schleich, 1993 (Testudines, Podocnemididae) from the middle Eocene, Messel Pit, of Germany [PDF]

open access: yesPeerJ, 2015
Background. Neochelys franzeni Schleich, 1993 is the only pleurodire or side-necked turtle from the middle Eocene, Messel Pit (the first UNESCO, World Natural Heritage Site in Germany, since 1995).
Edwin Cadena
doaj   +2 more sources

Analysis of the Anomalies in a Middle Eocene Shell of Neochelys (Pleurodira, Podocnemididae) from the Duero Basin (Zamora, Spain)

open access: yesDiversity, 2023
Turtle shells frequently exhibit anomalous osseous modifications on their surface which can sometimes compromise the survival of the organism. Nowadays, despite the large number of anomalies identified in both extant and extinct turtle shells, the ...
Andrea Guerrero   +3 more
doaj   +1 more source

Conserved bone microstructure in the shells of long-necked and short-necked chelid turtles (Testudinata, Pleurodira) [PDF]

open access: yesFossil Record, 2009
Extant and fossil chelids are restricted to South America and Australasia. Based on morphological data, long-necked and short-necked chelids are hypothesised to form natural groups respectively, whereas molecular and serological data indicate South ...
T. M. Scheyer
doaj   +5 more sources

The first neuroanatomical study of a marine pleurodire (the large Paleocene bothremydid Azzabaremys moragjonesi) reveals convergences with other clades of pelagic turtles [PDF]

open access: yesFossil Record
Azzabaremys moragjonesi, from the Paleocene of Mali, is a member of Nigeremydini. This is a clade of bothremydid pleurodiran turtles that includes large putatively marine forms which inhabited the African Trans-Saharian Seaway from the Maastrichtian to ...
Marcos Martín-Jiménez   +1 more
doaj   +3 more sources

Phylogeny & biogeography of Pleurodira from Phylogeny, biogeography and diversification patterns of side-necked turtles (Testudines: Pleurodira)

open access: yes, 2018
Details and additional data of the phylogenetic, diversification and biogeographic analyses related to the publication "Phylogeny, biogeography and diversification patterns of side-necked turtles (Testudines: Pleurodira)" by Ferreira et al.
Ferreira, Gabriel S.   +3 more
openaire   +1 more source

Chondrocranium and skeletal development of Phrynops hilarii (Pleurodira: Chelidae)

open access: yesActa Zoologica, 2009
AbstractThe present study represents the first comprehensive contribution to the knowledge of the skeletal development of a pleurodiran turtle, Phrynops hilarii (Pleurodira, Chelidae). The most remarkable features found are: (1) absence of ascending process on pterygoquadrate cartilage; (2) presence of ossification centres for the epiotics; (3) as in ...
Bona, Paula, Alcalde, Leandro
openaire   +2 more sources

A new species of Mesoclemmys, from the open formations of northeastern Brazil (Chelonii, Chelidae)

open access: yesPapéis Avulsos de Zoologia, 2005
A new species of South American side-necked turtle is described from the state of Piauí, Brazil. It is related to the Amazonian species of the genus Mesoclemmys s.l.
Roger Bour, Hussam Zaher
doaj   +1 more source

Amphibians and Reptiles Exhibit Different Ecological and Evolutionary Spatial Patterns in the Amazon Basin. [PDF]

open access: yesEcol Evol
This study investigates the spatial variability of ecological and evolutionary patterns in amphibian and reptile lineages within the Amazon Basin. Our findings highlight distinct diversity patterns across lineages and ecoregions. ABSTRACT Understanding spatial variability in ecological and evolutionary patterns is key to Amazonian biodiversity ...
López-Rojas JJ   +3 more
europepmc   +2 more sources

Organization and variation of mitochondrial DNA control region in pleurodiran turtles

open access: yesZoologia (Curitiba), 2011
Three complete mitochondrial DNA (mtDNA) control regions (CRs) of Chelodina rugosa (Ogilby, 1890), Chelus fimbriata (Schneider, 1783), and Podocnemis unifilis (Troschel, 1848) were firstly determined using Long-PCR method and the length were 1,016 bp, 1 ...
Ling Wang, Xuming Zhou, Liuwang Nie
doaj   +1 more source

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