First appearing in the latest Cretaceous, Crocodylia is a clade of semi-aquatic, predatory
reptiles, defined by the last common ancestor of extant alligators, caimans, crocodiles, and …

The fossil crocodylomorph fauna of the Cenozoic of South America is very rich and diverse.
Historically, few publications have been dedicated to providing an overall review of this …

Background During the growth of complex multicellular organisms, chronological age, size
and morphology change together in a hierarchical and coordinated pattern. Among extinct …

Existing classifications of snout shape within Crocodylia are supported by functional studies,
but ecological surveys often reveal a higher than expected diversity of prey items within …

Here we present a comparative anatomical study of large late Miocene alligatorids of
Argentina (Ituzaingó Formation), in which we analyse their taxonomy, morphological …

Crocodylomorpha, which includes living crocodylians and their extinct relatives, has a rich
fossil record, extending back for more than 200 million years. Unlike modern semi‐aquatic …

Advances in molecular biology and genetics are revealing that many recognized
crocodylian species are complexes of two or more cryptic species. These discoveries will …

Ontogenetic variation of cranial characters used in crocodylian phylogenetic systematics has
never been studied. Furthermore, the relationship between diet and skull morphological …

The number of precaudal vertebrae in all extant crocodylians is remarkably conservative,
with nine cervicals, 15 dorsals and two sacrals, a pattern present also in their closest extinct …

Baleen whales (Mysticeti) have an extraordinary fossil record documenting the transition
from toothed raptorial taxa to modern species that bear baleen plates, keratinous bristles …