Chelonological Contributions

Following the neotype designation and morphological revision by Joseph-Ouni et al. (2025), the Guanajuato Mud Turtle Kinosternon integrum LeConte, 1854 has now been restricted in its distribution to the central Mexican states. Until relatively recently, even under its sensu lato concept, K. integrum was not known to definitively occur in the Mexican state of Veracruz; de la Torre-Loranca et al. (2020) made note of the

Following the neotype designation and sensu stricto redefinition of Kinosternon integrum Le Conte, 1854 by Joseph-Ouni et al. (2025), the populations of mud turtles in the northwestern Mexico coastal Pacific drainages formerly assigned to that taxon are currently examined here and found to constitute a distinct undescribed species in the K. integrum complex. The honorific patronym Kinosternon iversoni sp. nov. is dedicated to Dr. John

The widespread but endemic mud turtle species Kinosternon integrum Le Conte, 1854 currently ranges throughout most of Mexico, from southern Sonora in the northwest to and through western, central and southern Mexico at least to eastern Oaxaca. Broad and convincing evidence indicates that Kinosternon integrum actually represents a taxonomically complicated species complex; however, as the holotype has allegedly been lost for more than a sesquicentennial

The mud turtle genus Kinosternon of the Testudines family Kinosternidae represents the most speciose and most widely distributed grouping of extant freshwater turtles. Currently 33 taxa are recognized, with an aggregated geographical range from New England west and south throughout the United States, Mexico, Central America and South America to northern Argentina (TTWG 2021). Belying the species’ biodiversity is a taxonomic quagmire of lost and

Elseya caelatus berau was described by Joseph-Ouni & McCord (2023) as a localized chelid snapping turtles subspecies confined to the southern coastal Vogelkop Pensinsula, New Guinea along the freshwater drainages of the northeastern Berau Gulf. Though known for several decades, formal description was eventually hampered by the conclusion that the type series was destroyed during the failure of a preservation system; consequently the taxon was

The inclusion of osteological characters as an essential component of the diagnosability of Australasian chelid turtles on a species level has taken on a higher priority in the last three decades. Genetic and morphological investigations continue to reveal a significantly enriched level of turtle species biodiversity in Australia and New Guinea than previously suspected. One of the characters involves that of the plastral scar and

Numerous fossil Mesozoic and Cenozoic turtle taxa of the cryptodiran lineages, including Paracryptodira and Eucryptodira, are characterized by series of inframarginal scutation of the lateral plastron. In extant representatives of the subordinal turtle lineages, inframarginal scutes are again most marked in cryptodires among which some retain full series of inframarginals, including sea turtles of the family Cheloniidae, the riverine Dermatemyidae and the semi-terrestrial Platysternidae. Amongst

The Pleurodiran turtle family Pelomedusidae includes only two extant but speciose genera, Pelusios and Pelomedusa, both of which also succeed fossil record taxa with moderate representation. The Division of Vertebrate Zoology, Yale Peabody Museum, located in New Haven, Connecticut, United States of America, currently houses 68 specimens of recent pelomedusid turtle. Here we review and describe the specimens comprising this collection and correct several species