The oldest known amniotic embryos suggest viviparity in mesosaurs

@article{Pieiro2012TheOK,
  title={The oldest known amniotic embryos suggest viviparity in mesosaurs},
  author={G. Pi{\~n}eiro and J. Ferigolo and M. Meneghel and M. Laurin},
  journal={Historical Biology},
  year={2012},
  volume={24},
  pages={620 - 630}
}
  • G. Piñeiro, J. Ferigolo, +1 author M. Laurin
  • Published 2012
  • Biology
  • Historical Biology
  • The earliest undisputed crown-group amniotes date back to the Late Carboniferous, but the fossil record of amniotic eggs and embryos is very sparse, with the oldest described examples being from the Triassic. Here, we report exceptional, well-preserved amniotic mesosaur embryos from the Early Permian of Uruguay and Brazil. These embryos provide the earliest direct evidence of reproductive biology in Paleozoic amniotes. The absence of a recognisable eggshell and the occurrence of a partially… CONTINUE READING

    Paper Mentions

    Reproduction in Early Amniotes
    32
    Viviparity in a Triassic marine archosauromorph reptile
    Evolution of viviparous reproduction in Paleozoic and Mesozoic reptiles.
    11
    Integrating developmental biology and the fossil record of reptiles.
    7
    A case study of developmental palaeontology in Stereosternum tumidum (Mesosauridae, Parareptilia)
    2
    Was Mesosaurus a Fully Aquatic Reptile?
    8

    References

    Publications referenced by this paper.
    SHOWING 1-10 OF 66 REFERENCES
    Caecilian viviparity and amniote origins: a reply to Wilkinson and Nussbaum
    18
    Palaeontology: Pterosaur embryo from the Early Cretaceous
    52
    Embryos of an Early Jurassic Prosauropod Dinosaur and Their Evolutionary Significance
    102
    Viviparity and K-Selected Life History in a Mesozoic Marine Plesiosaur (Reptilia, Sauropterygia)
    75
    Cretaceous choristoderan reptiles gave birth to live young
    20