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Related to Mesosaur: mosasaur


n.1.Same as Mosasauria.
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These are professional packages (SAS, BMDP), universal packages (STADIA, OLIMP, STATGRAPHICS, STATIST1CA, SPSS) and specialized packages (DATASCOPE, BIOSTAT, MESOSAUR).
"After the recent discovery of mesosaur embryos, we can state with a high degree of confidence that embryo retention developed early in amniote evolution, given that mesosaurs are among the basal-most reptiles and that they date from the Early Permian around 280 million years ago," she asserted.