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Saurosternon

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Through Extinction

The affinities of Saurosternon are uncertain. Several studies interpreted it as one of the earliest lepidosauromorphs, the reptile group including squamates (lizards and snakes), rhynchocephalians (tuatara and kin), and their close relatives. One study proposed that Saurosternon was a "paliguanid", a suggested (and likely invalid) ancestral family of lizards also including Paliguana and Palaeagama. More recently it has generally been considered an early neodiapsid outside of Sauria (the crown group of reptiles).

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