References: S
References listed alphabetically
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Sander, P Martin (1988) A Fossil Reptile Embryo from the Middle Triassic of the Alps; Science, 239, pp.780-783
Sander, P Martin (1988) The life cycle of the pachypleurosaur Neusticosaurus n. sp. from the Middle Triassic of Monte San Giorgio, Switzerland; Journal of Vertebrate Paleontology, 8(3, Suppl.), pp.25A
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