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Scientists Describe Tainrakuasuchus Bellator, an Armored Crocodile Relative From 240 Million Years Ago

The peer-reviewed study ties the species to Tanzania’s Mandasuchus, underscoring Gondwanan links in Middle Triassic ecosystems.

Overview

  • The formal description appears in the Journal of Systematic Palaeontology (DOI: 10.1080/14772019.2025.2573750), detailing anatomy and evolutionary placement.
  • Fossils were excavated in May 2025 near Dona Francisca in southern Brazil and preserve parts of the lower jaw, cervical and dorsal vertebrae, an ilium, and protective osteoderms.
  • Researchers estimate a body length of about 2.4 meters and mass near 60 kilograms, with a long neck and recurved teeth consistent with fast, precision hunting.
  • Phylogenetic analyses place the animal among poposauroid pseudosuchians with close affinities to Mandasuchus from Tanzania, reinforcing faunal connections across Gondwana.
  • The specimen is partial and lacks limbs, leading scientists to infer quadrupedal movement from related taxa, and its discovery broadens the sparse South American record of Middle Triassic pseudosuchians.