The oldest known amniotic embryos suggest viviparity in mesosaurs

Unusual Environmental Conditions Preserve a Permian Mesosaur-Bearing Konservat-Lagerstätte from Uruguay

(2011) Graciela Piñeiro et al.   ACTA PALAEONTOLOGICA POLONICA

A gravid lizard from the Cretaceous of China and the early history of squamate viviparity

(2011) Yuan Wang et al.   NATURWISSENSCHAFTEN

Viviparity and K-Selected Life History in a Mesozoic Marine Plesiosaur (Reptilia, Sauropterygia)

(2011) F. R. O'Keefe et al.   SCIENCE

The postcranial skeleton of the aquatic parareptileMesosaurus tenuidensfrom the Gondwanan Permian

(2010) SEAN PATRICK MODESTO   JOURNAL OF VERTEBRATE PALEONTOLOGY

Cretaceous choristoderan reptiles gave birth to live young

(2010) Qiang Ji et al.   NATURWISSENSCHAFTEN

Developmental palaeontology in synapsids: the fossil record of ontogeny in mammals and their closest relatives

(2010) M. R. Sanchez-Villagra   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Implications of flexible-shelled eggs in a Cretaceous choristoderan reptile

(2009) L.-H. Hou et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

A survey of the rock record of reptilian ontogeny

(2009) Massimo Delfino et al.   SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY

Recognition of vertebrate egg abnormalities in the Upper Cretaceous fossil record

(2007) Frankie D. Jackson et al.   CRETACEOUS RESEARCH