Turtles of the clade Pan-Trionychidae have a rich fossil record in the Old World, ranging from
the Early Cretaceous (Hauterivian) to the Holocene. The clade most probably originated in …

Over the last 25 years, researchers, mostly paleontologists, have developed a system of
rank-free, phylogenetically defined names for the primary clades of turtles. As these names …

Turtles of the clade Pan-Trionychidae have a rich, but fragmentary fossil record in the New
World, ranging from the Late Cretaceous to the Holocene. The clade immigrated to North …

Evolutionary transitions to marine habitats occurred frequently among Mesozoic reptiles.
Only one such clade survives to the present: sea turtles (Chelonioidea). Other marine turtles …

Trionychid (softshell) turtles have a peculiar bauplan, which includes shell reductions and
cranial elongation. Despite a rich fossil record dating back to the Early Cretaceous, the …

Chelonians are ectothermic, with an extensive fossil record preserved in diverse
palaeoenvironmental settings: consequently, they represent excellent models for …

The cranium of turtles (Testudines) is characterized by the secondary reduction of temporal
fenestrae and loss of cranial joints (ie, characteristics of anapsid, akinetic skulls). Evolution …

Pan‐trionychids (soft‐shelled turtles) are known from the Neogene and Quaternary fossil
record of Africa. They have so far been totally absent in Palaeogene localities of the …

Pan-trionychids or softshell turtles are a highly specialized and widespread extant group of
aquatic taxa with an evolutionary history that goes back to the Early Cretaceous. The earliest …

Plastomeninae, a clade of fossil turtles that has recently undergone significant revision, are
currently known from the Late Cretaceous to the Eocene, with some genera known to …