The anklebone (astragalus) of dinosaurs presents a characteristic upward projection, the ‘ascending process’ (ASC). The ASC is present in modern birds, but develops a separate ossification centre, and ...
The theory of evolution / David P. Mindell and Samuel M. Scheiner -- Part 1: Overarching Issues. Historicizing the synthesis: critical insights and pivotal moments in the long history of evolutionary ...
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