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Eusuchia conforms a crocodyliform lineage, including crown-group Crocodylia, known since the Lower Cretaceous. Nowadays there are only 23 eusuchian species, but their rich fossil record indicates that they were more abundant and widespread in the past. Previous works assess changes in taxonomic diversity in all Pseudosuchia (Mannion et al., 2015) and Mesozoic Crocodyliformes (Tennant et al., 2016) with appropriate novel techniques to avoid bias. The present work makes a first preliminary approach to understand how the taxonomic diversity of Eusuchia changed since their first appearance in the fossil record.