Genomic analyses reveal two species of the matamata (Testudines: Chelidae: Chelus spp.) and clarify their phylogeography

M Vargas-Ramírez, S Caballero… - Molecular phylogenetics …, 2020 - Elsevier
Highlights•Another matamata species is described as new to science.•Chelus orinocensis is
genetically and morphologically significantly different.•Chelus orinocensis and C. fimbriata …

The anatomy, paleobiology, and evolutionary relationships of the largest extinct side-necked turtle

EA Cadena, TM Scheyer, JD Carrillo-Briceño… - Science …, 2020 - science.org
Despite being among the largest turtles that ever lived, the biology and systematics of
Stupendemys geographicus remain largely unknown because of scant, fragmentary finds …

An updated description of the osteology of the pancake tortoise Malacochersus tornieri (Testudines: Testudinidae) with special focus on intraspecific variation

AK Mautner, AE Latimer, U Fritz… - Journal of …, 2017 - Wiley Online Library
Exceptional variability in the shell of the pancake tortoise Malacochersus tornieri, both in the
keratinous surficial scutes and the underlying bones, in addition to its remarkably …

Review of the fossil matamata turtles: earliest well-dated record and hypotheses on the origin of their present geographical distribution

GS Ferreira, AD Rincón, A Solórzano, MC Langer - The Science of Nature, 2016 - Springer
The matamata (Chelus fimbriatus) is a highly aquatic chelid turtle known exclusively from
northern South America. Due to its extremely modified morphology, it is well circumscribed …

Unusual shell anatomy and osteohistology in a new Late Cretaceous panchelid turtle from northwestern Patagonia, Argentina

MS de La Fuente, R Bolatti, L Salgado, JI Canudo… - 2017 - zaguan.unizar.es
Rionegrochelys caldieroi de la Fuente, Maniel, and Jannello gen. et sp. nov. is a Late
Cretaceous turtle from Rio Negro Province, Argentina. The holotype and the referred …

 New insights into the fossil record of the turtle genus Chelus Duméril, 1806 including new specimens with information on cervicals and limb bones

EA Cadena, A Link, A Vanegas… - Comptes Rendus …, 2023 - zora.uzh.ch
Matamata turtles (Chelus Duméril, 1806) are composed of two extant species, Chelus
fimbriata Schneider, 1783 and Chelus orinocensis Vargas-Ramírez, Caballero, Morales …

New interpretations of Dortoka vasconica Lapparent de Broin and Murelaga, a freshwater turtle with an unusual carapace

A Pérez-García, TM Scheyer, X Murelaga - Cretaceous Research, 2012 - Elsevier
The discovery of abundant new material of the European turtle Dortoka vasconica at its type
locality and a review of the previously analyzed material allow new interpretations of the …

[PDF][PDF] Eocene chelid turtles from Redbank Plains, Southeast Queensland, Australia

FL de Broin, RE Molnar - Geodiversitas, 2001 - sciencepress.mnhn.fr
The rich fauna of freshwater turtles from Redbank Plains (Brisbane), Queensland, Eocene
(or less probably Palaeocene) includes only Chelidae (Pleurodira). Besides an …

Morphometric variation and its effect on reproductive potential in female Colombian slider turtles (Trachemys callirostris callirostris)

JM Daza, VP Páez - Herpetologica, 2007 - meridian.allenpress.com
We evaluated morphometric variation and reproductive effort in Trachemys callirostris
callirostris females from nine populations in the Mompos Depression of northern Colombia …

A new Chengyuchelys latimarginalis record from the Upper Jurassic Shangshaximaio Formation of Sichuan Basin, China, and the intraspecific variation

C Chou, L Xing, F Wang, X Xie, H Tong - Historical Biology, 2024 - Taylor & Francis
ABSTRACT A new Chengyuchelys latimarginalis (Xinjiangchelyidae) specimen is reported
based on a well-preserved, nearly complete shell from the upper part of the Upper Jurassic …