Baurusuchidae

Lore & Background

Both Baurusuchus and Sebecus have deep snouts and ziphodont dentitions. Other forms later found to have a close appearance include Cynodontosuchus, Stratiotosuchus, and Wargosuchus. Several features were used to unite these groups: a deep snout, a ziphodont dentition, a curved tooth row, an enlarged canine-like dentary tooth that fits into a deep notch in the upper jaw, and a groove on the lower jaw.

Reader's Guide

Baurusuchidae represents a significant group of Gondwanan crocodyliforms that adapted to a fully terrestrial hypercarnivorous lifestyle during the Late Cretaceous. Their remains have been found in South America and Asia, indicating a wide distribution across the southern continents. The family has been central to debates about crocodyliform phylogeny, with various analyses placing them within Notosuchia, Sebecosuchia, or as basal metasuchians. The formal definition of Baurusuchidae under the PhyloCode, along with the stem-based taxon Baurusuchia, provides a framework for understanding their evolutionary relationships. The discovery of multiple genera, including Campinasuchus and Pissarrachampsa in 2011, has expanded knowledge of their diversity. The proposed subfamilies Baurusuchinae and Pissarrachampsinae reflect internal phylogenetic structure, though the placement of some taxa like Cynodontosuchus remains uncertain due to fragmentary remains.

Did You Know?

• Baurusuchidae has been officially defined as the least inclusive clade containing Cynodontosuchus rothi, Pissarrachampsa sera, and Baurusuchus pachecoi.
• Two subfamilies have been proposed: Baurusuchinae (including Stratiotosuchus and Baurusuchus) and Pissarrachampsinae (including Pissarrachampsa and Wargosuchus).
• Pabwehshi, the youngest genus assigned to Baurusuchidae, is from the Maastrichtian of Pakistan but has since been reassigned as a basal member of Sebecia.