New Species Janjucetus dullardi: Tiny Ancient Whale Fossil Unveiled in Australia

August 15, 2025
New Species Janjucetus dullardi: Tiny Ancient Whale Fossil Unveiled in Australia
  • Scientists have identified a new species of early whale, Janjucetus dullardi, which lived during the Oligocene Epoch around 25 to 23 million years ago, and was discovered from a fossil found in 2019 at Jan Juc Beach, Victoria, Australia.

  • This tiny predator, approximately 3 meters (10 feet) long, belongs to the mammalodontid family, making it only the fourth such species identified and the first since 2006 in Australia, highlighting the rarity of well-preserved whale fossils.

  • The fossil includes a partial skull, ear bones, teeth, and evidence of small leg stumps, which suggest early whales had different body morphologies from modern species, though more fossils are needed for a complete understanding.

  • The fossil reveals that Janjucetus dullardi had razor-sharp teeth, a shark-like snout, and large, tennis ball-sized eyes, indicating its predatory nature and small size, fitting comfortably in a single bed.

  • Its physical features, such as the large eyes and sharp teeth, point to a predatory lifestyle, and its size and morphology provide valuable insights into early whale evolution.

  • Erich Fitzgerald from Museums Victoria emphasized the species' evolutionary importance as an early branch leading toward modern baleen whales, showcasing its unique features and evolutionary significance.

  • The discovery offers crucial insights into the feeding, movement, and behavioral adaptations of ancient whales, helping scientists understand cetacean evolution and how these animals responded to ancient climate changes.

  • Fossil preservation is rare due to natural erosion and ocean activity, making finds like Janjucetus dullardi especially valuable for reconstructing prehistoric marine ecosystems.

  • Such discoveries are significant because complete whale fossils are uncommon, and they help scientists piece together whale evolution, behavior, and adaptation to ancient environments.

  • Ross Dullard, an amateur fossil hunter, discovered the fossil in 2019 and celebrated the find with a fossil-themed party, highlighting the personal and scientific significance of the discovery.

  • The fossil, which includes a partial skull with ear bones and teeth, was found at Jan Juc Beach, Victoria, and is approximately 25 million years old, marking an important milestone in paleontology.

Summary based on 5 sources


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