🦎 In a global study, scientists discovered osteoderms (bony structures found in the skin) in 29 species of monitor lizards, which significantly expanded our knowledge of reptile evolution.
👉Published on July 21 in the Zoological Journal of the Linnean Society, the study is the first comprehensive global analysis of osteoderms in lizards and snakes. The study was conducted by an international team of scientists from Australia, Europe, and the United States. Using advanced micro-CT scanning technology, the researchers examined nearly 2,000 reptile specimens from major museum collections, including the Research Institute of the Museum of Victoria.
🕵 Osteoderms are typically associated with animals like crocodiles, armadillos, and certain dinosaurs such as Stegosaurus. The study significantly expands our knowledge of these bone structures. Researchers have discovered that osteoderms are present in almost half of all lizard species worldwide, which represents an 85% increase over previous estimates.
👩🔬 What is important about this discovery is that it changes our current understanding of reptile evolution. It suggests that osteoderms may have evolved in response to environmental pressures as lizards adapted to the harsh conditions of Australia. Until now, the presence of osteoderms in monitor lizards was considered rare and occurred mainly in Komodo dragons.
🦎 This groundbreaking study not only opens a new chapter in the history of Australian monitor lizards, but also provides a powerful new dataset that will allow us to explore how skin, body structure, and survival have been linked over millions of years of evolution.
👉 If you want more information, I encourage you to read the references:
Roy Ebel, Chris Broeckhoven, Edward L Stanley, Till Ramm, J Scott Keogh, Dermal armour in lizards: osteoderms more common than presumed, Zoological Journal of the Linnean Society, Volume 204, Issue 3, July 2025, zlaf070
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PHOTO: Rosenberg goanna (Varanus rosenbergi WAM R95408) with osteoderms and endoskeleton revealed in the left half. Credit: Roy Ebel
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Naturalist, traveler, French-Polish herpetologist, interested in biodiversity and the conservation of herpetofauna. I have always been passionate about observing and studying amphibians and reptiles, especially different species of lizards in many countries. This has allowed me to gain experience in scientific research by collaborating with other specialists, attending numerous conferences and writing papers on herpetofauna. I participate in numerous monitoring and conservation programmes. Member of the IUCN SSC Monitor Lizard Specialist Group. Addicted to Natural History.
Education and the sharing of knowledge is the key to progress and understanding.
"Learning from the past to understand the present and prepare the future."
