The evolution of the dicynodont sacrum: constraint and innovation in the synapsid axial column
Sign Up to like & getrecommendations! Published in 2019 at "Paleobiology"
DOI: 10.1017/pab.2018.49
Abstract: Abstract. Constraint is a universal feature of morphological evolution. The vertebral column of synapsids (mammals and their close relatives) is a classic example of this phenotypic restriction, with greatly reduced variation in the number of… read more here.
Keywords: evolution; column; sacral vertebrae; vertebrae ... See more keywords
Sacral co‐ossification in dinosaurs: The oldest record of fused sacral vertebrae in Dinosauria and the diversity of sacral co‐ossification patterns in the group
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Anatomy"
DOI: 10.1111/joa.13356
Abstract: The fusion of the sacrum occurs in the major dinosaur lineages, i.e. ornithischians, theropods, and sauropodomorphs, but it is unclear if this trait is a common ancestral condition, or if it evolved independently in each… read more here.
Keywords: sacral vertebrae; oldest record; ossification; fusion ... See more keywords