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What is Ceratocaudia antigua?

July 25, 2026

Scientists recently discovered a new species of long-necked dinosaur named Ceratocaudia antiqua in western India that possessed a unique, horn-like tail crest.

About Ceratocaudia antigua:

  • It is a new species of long-necked dinosaur.
  • It was discovered following excavations in the Kaladongar Formation of the Kachchh Basin in the Kutch district of Gujarat.
  • Living roughly 170 to 180 million years ago during the Jurassic period, this diminutive giant reaches only about seven meters in length, significantly smaller than its more famous 20-meter-long relatives like Brachiosaurus.
  • Ceratocaudia is distinguished by several physical traits that set it apart from its closest relatives.
    • The most striking feature is a curved, horn-like crest atop its front tailbones.
    • It also possessed a unique notch on its neck vertebrae and specific shapes in its lower leg bones, the tibia and fibula, which have not been seen in other sauropods.
    • Furthermore, its tail vertebrae show a rare transition from flat-ended joints to "ball-and-socket" joints near the tip, a feature usually reserved for much later dinosaur species.
  • The name Ceratocaudia antiqua reflects these physical and historical traits.
    • The genus name is derived from the Greek words ‘cerato’ (meaning horn) and ‘caud’ (meaning tail), referring to the unique spike on its vertebrae.
    • The species name, ‘antiqua’, is Latin for "old" or "ancient," highlighting that this is one of the earliest known macronarian dinosaurs, a group of long-necked giants characterised by their large, boxy skulls and wide nostrils.
  • Ceratocaudia now stands as the earliest diagnosable member of its lineage in India and one of the oldest in the world .

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