Egg accumulation with 3D embryos provides insight into the life history of a pterosaur

  title={Egg accumulation with 3D embryos provides insight into the life history of a pterosaur},
  author={Xiaolin Wang and Alexander Wilhelm Armin Kellner and Shunxing Jiang and Xin Cheng and Qiang Wang and Yingxia Ma and Yahefujiang Paidoula and Taissa Rodrigues and He Chen and Juliana Manso Say{\~a}o and Ning-Ning Li and Jialiang Zhang and Renan Alfredo Machado Bantim and Xi Meng and Xinjun Zhang and Rui Qiu and Zhonghe Zhou},
  pages={1197 - 1201}
Even more like birds Ecological convergence between pterosaurs and birds is often invoked, but to what degree the two groups share behavior is debated. Wang et al. describe a site with more than 100 fossilized pterosaur eggs that reveals that hatchling pterosaurs were likely not as precocial as previously thought (see the Perspective by Deeming). Furthermore, the overlaying of multiple clutches suggests that the pterosaurs may have exhibited breeding site fidelity, similar to rookery-breeding… 
Prenatal development in pterosaurs and its implications for their postnatal locomotory ability
Early ossification of the vertebral column, limb girdles and principal limb bones involved some heterochronic shifts in appearance times and facilitated full development of the flight apparatus prior to hatching, consistent with a super-precocial flight ability and suggests that it was not an absolute requirement.
How pterosaurs bred
  • D. Deeming
  • Environmental Science, Geography
  • 2017
Wang et al. (3) report the largest accumulation of Hamipterus pterosaur eggs found to date, which is a crucial advance in understanding pterOSaur reproduction.
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The Evolutionary Developmental Control of the Avian Feeding Apparatus
It is suggested that several molecules regulating the development of the avian beak also mediate the growth of keratinous rhamphothecae, and the divergence of odontogenic signalling pathways are likely to have accounted for both of these processes.
The diverse terminology of reptile eggshell microstructure and its effect on phylogenetic comparative analyses
It is concluded that the traditional “soft/hard/semi‐rigid” classification of reptilian eggshells should be abandoned and guidelines for future descriptions focusing on specific functionally relevant characteristics are provided.
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Pelvis morphology suggests that early Mesozoic birds were too heavy to contact incubate their eggs
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Microstructural description of the maniraptoran egg Protoceratopsidovum
Since their discovery in the 1920s, some asymmetric, elongated dinosaur eggs from the Upper Cretaceous of Mongolia have been interpreted as ceratopsian eggs. However, recent views support a
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Eggshell and Histology Provide Insight on the Life History of a Pterosaur with Two Functional Ovaries.
Pterosaurs laid eggs even smaller than previously thought and had a reproductive strategy more similar to basal reptiles than to birds, which shows that pterosaurs were highly precocial or needed parental care.
Developmental growth patterns of the filter-feeder pterosaur, Pterodaustro guiñazui
A comprehensive osteohistological assessment of multiple skeletal elements of a range of ontogenetic sizes of Pterodaustro is presented, and unparalleled insight is provided into its growth dynamics.
Sauropod dinosaur embryos from the Late Cretaceous of Patagonia
The first known unequivocal embryonic remains of sauropod dinosaurs—the only known non-avian dinosaur embryos from Gondwana—are described from a nesting ground in the Upper Cretaceous stage of Patagonia, Argentina and it is proposed that these specimens belong to the same sauroPod species.
Early juvenile pterosaurs (Pterodactyloidea: Pterodaustro guinazui) from the Lower Cretaceous of central Argentina
We report on two juvenile specimens of Pterodaustro guinazui , a medium-sized, filter-feeding pterodactyloid pterosaur from the Lower Cretaceous (Albian) lacustrine deposits of the Lagarcito
Comments on Triassic pterosaurs with discussion about ontogeny and description of new taxa.
The present study increases the diversity of Triassic flying reptiles and further pushes the origins of this clade back to at least the Middle Triassic.
Histovariability in bones of two pterodactyloid pterosaurs from the Santana Formation, Araripe Basin, Brazil: preliminary results
  • J. Sayão
  • Biology
    Geological Society, London, Special Publications
  • 2003
Results of the histological analysis of two pterodactyloid pterosaurs from the Romualdo and Crato Members of the Santana Formation show variations in different bones of the same individual represent differential growth rates.
Development of the dentition in Alligator mississippiensis. Later development in the lower jaws of embryos, hatchlings and young juveniles
Development of the lower dentition from stage 19 (day 26) embryos to 11 days after hatching (day 76) was studied in a close series of accurately aged specimens of Alligator mississippiensis using macroscopy, light microscopy, scanning electron microscope, radiography and detailed reconstructions, providing the first careful documentation of dentition development in any non-mammalian tetrapod from the first initiated tooth to the first erupted and functional dentition.