Articles tagged with Reptiles
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A genetic study reveals that saltwater crocodiles on remote Seychelles islands were part of a western population, confirming earlier hypotheses based on external characteristics. The species' unique adaptations enabled them to colonize islands and coastal regions over long distances.
Researchers found a mosasaur tooth in North Dakota that revealed the giant reptile's ability to thrive in freshwater rivers. The study used isotope analyses to show that mosasaurs inhabited riverine environments in their final million years before extinction.
A University of Cambridge-led team analyzed giant anaconda fossils to determine their maximum size occurred 12.4 million years ago. The study found that ancient anacondas were four to five metres long, matching the size of modern anacondas, suggesting they have remained giants due to a suitable environment.
Researchers discovered a new 233-million-year-old nonflying relative of pterosaurs that provided breakthrough insights into the evolution of flight in these animals. The study found that pterosaurs evolved their own 'flight computers' from scratch, with unique brain structures and smaller brain sizes compared to birds.
Researchers found that pterosaurs developed flight with a smaller brain similar to non-flying dinosaurs. Advanced imaging tools were used to study the brain cavities of pterosaur fossils, revealing a larger optic lobe that may have aided in their ability to fly.
Researchers have identified two new species of Pinocchio chameleons in Madagascar, reclassifying the long-known Calumma nasutum as part of a complex that includes the newly described Calumma pinocchio and Calumma hofreiteri. Genetic analysis revealed that the nose chameleons' snout shape can change quickly.
A new species of wolf snake, Lycodon irwini, has been discovered in the Great Nicobar Islands and named in honor of Steve Irwin. The snakes are glossy black, non-venomous, and likely feed on reptiles and small mammals.
The discovery sheds light on marine ecosystems' rapid recovery and complexification after the end-Permian mass extinction. The Spitsbergen fossil deposit reveals diverse marine reptiles, including archosauromorphs and ichthyosaurs, with some species reaching 5m in length.
A newly discovered carnivorous lizard, Tainrakuasuchus bellator, lived 240 million years ago and resembled a dinosaur due to its armour-plated body. The species was among the top predators of its time in Brazil during the Triassic Period.
Chameleons have two long, coiled optic nerves that enable their remarkable ability to look in two different directions at once. Researchers used CT scanning technology to visualize the hidden structure, revealing a unique trait not seen in any other lizard.
A new study reveals that island reptiles are more threatened with extinction than mainland species, yet remain largely ignored by researchers. The study found that 30% of island-dwelling reptiles are threatened, while only 6.7% of reptile-focused research publications have studied them.
A new study reveals that climate change is driving many native Australian reptiles toward extinction. The research uses fossil evidence and genetic data to show how the endangered Australian Mountain Dragon has responded to major environmental changes in the past.
The discovery of Wadisuchus kassabi in the Campanian period (80 million years ago) sheds light on the origin and biogeography of Dyrosauridae, a group of ancient crocodiles that thrived in coastal and marine environments. The species highlights Egypt's Western Desert as a cradle of marine croc evolution.
Researchers studied snake strikes using high-speed cameras, revealing distinct biting styles among viper, elapid and colubrid species. Viper fangs embed quickly, while elapids bite repeatedly, with colubrids sweeping their jaws to deliver maximum venom.
Scientists studied the crystalline waste of over 20 reptile species and found spheres of uric acid in all of them. This unique packaging method may inform treatments for human conditions like kidney stones and gout.
Scientists have uncovered a 167 million-year-old fossil lizard with snake-like features, challenging earlier assumptions about the evolution of snakes. The newly discovered species, Breugnathair elgolensis, has a mix of primitive and specialized traits that shed light on the origins of snakes and lizards.
A new study explores why certain parts of reptiles, such as lizard jaws and snake vertebrae, are more likely to be preserved as fossils. The research reveals that physical characteristics like bone density and body size, as well as the environment in which the animals lived and died, are major predictors of fossil completeness.
A new species of Diploderma lizard, Diploderma bifluviale, has been described from the upper Dadu River Valley in the Hengduan mountains of Sichuan Province. The species exhibits unique characteristics, such as a wheat-colored tongue and distinct coloration, and is found in semi-arid shrublands at elevations of 2,100 to 2,500 m.
Two baby pterosaurs, aged less than 20 cm with broken wings, were found to have died from powerful storms that also preserved hundreds of other fossils. The discovery explains why smaller fossils are well-preserved, as they were a direct result of storms.
A new species of hypercarnivorous crocodyliform, Kostensuchus atrox, has been discovered in prehistoric Patagonia with a length of 11.5ft and weight of 250kg. This predator was likely one of the top predators in its ecosystem.
A University of Queensland study suggests the antivenom given to people bitten by Eastern Brown Snakes may not be as effective as it could be due to geographic variations in venom. The research found that venom from southern Australia has a strong, stable blood clot, while northern populations trigger fragile but rapid clots.
Researchers have found that Black Mambas accumulate heavy metals such as lead and mercury in their scales. This allows them to serve as a natural indicator of environmental pollution levels. By analyzing scale clippings from these snakes, scientists can accurately measure spatial patterns of pollution without harming the snakes.
The winner of the 2025 BMC journals Image Competition is a photograph of two male saigas sparring on the banks of a steppe lake. The image, taken by Andrey Giljov, showcases the unique characteristics of saiga antelopes and their survival strategies.
Australian skinks have developed tiny changes in a muscle receptor that blocks nerve-muscle communication, preventing paralysis and death. This finding could inform the development of novel antivenoms and therapeutic agents to counter neurotoxic venoms.
A newly described microendemic gecko species has been found in three small forest fragments in south-eastern Madagascar. The species, Paragehyra tsaranoro, is critically endangered due to habitat loss and fragmentation, highlighting the importance of protecting its cultural heritage.
A new cell type has been identified in Burmese pythons that produces large particles made from calcium, phosphorus, and iron to digest bones. This specialized cell type helps limit excessive calcium absorption and is found in multiple python and boa species as well as the Gila monster.
A team led by L. Mahadevan found that young anacondas can execute a quick, one-off skating movement called the 'S-start' due to their physical attributes. This movement is similar to sidewinding and could inspire new robotic systems.
A new study reveals that lagerpetids, relatives of pterosaurs, were able to tolerate a wide range of climate conditions and distributed widely across the globe. In contrast, pterosaurs initially required more humid tropical conditions to fly.
A new study reveals that turtles employ both molecular genetic factors and mechanical forces to develop the scales on different parts of their heads. The findings suggest that mechanical shaping of scales is an ancestral trait shared with crocodiles and likely dinosaurs, but lost in birds.
A study found that three lizard species in Madagascar consume fruits from over 20 plant species and expel viable seeds, indicating their potential crucial role as seed dispersers. This discovery is significant as environmental degradation affects large frugivores like lemurs, but lizards can continue to inhabit degraded environments.
Researchers at the University of Warwick have developed a glycopolymer-functionalized gold nanoparticle test to detect Western Diamondback Rattlesnake venom. The assay uses synthetic sugars that mimic natural receptors targeted by venom proteins, offering a potential game-changer for snake envenomation diagnosis.
A group of elasmosaur fossils has been formally identified as belonging to a new genus, Traskasaura sandrae. This ancient marine reptile, measuring 12 meters long and having heavy, sharp teeth, likely hunted prey from above using its strong swimming capabilities.
The discovery of a 355-million-year-old sandstone slab in Australia reveals the earliest clawed footprints ever found, challenging the long-held timeline of tetrapod evolution. The findings suggest that reptiles evolved significantly earlier than previously thought, impacting the entire evolutionary history of amniotes.
A team of scientists has discovered a prehistoric tegu fossil in the US, revealing that these charismatic lizards were once native to North America. The fossil, dated to the Middle Miocene Climatic Optimum, is believed to have been present in present-day Georgia during a warm period, before global temperatures cooled and they disappeared.
A research team discovered fossilized teeth and vertebrae in the Dominican Republic, confirming that large, terrestrial predators like sebecids once inhabited the Caribbean. This finding supports the GAARlandia hypothesis, suggesting temporary land bridges allowed animals to travel between South America and the Caribbean.
Researchers developed a new, three times more effective version of the antibothropic serum used to treat snake venom poisoning. The improved serum had increased neutralizing antibodies and fewer proteins associated with side effects, resulting in greater potency and reduced risk of adverse reactions.
A study from Lund University found that reptiles living in open habitats generally have brighter colouration than those in denser vegetation. The researchers analyzed images of 10,638 species and discovered a strong connection between light colors and open habitats over the past 200 million years.
Researchers at UTA uncovered how the flowerpot snake repairs its DNA and prevents harmful mutations, shedding light on genetic repair mechanisms that could deepen our understanding of human gene evolution. The study also reveals surprising findings about reproductive strategies and immune-related genes in reptiles.
Researchers tracked hawksbill turtles migrating over 1,000km from nesting sites to foraging grounds in the Western Caribbean. The study found that turtles congregate in specific feeding hotspots despite riding with and against ocean currents.
A new study found that birds have lower cancer rates despite high blood sugar levels, challenging existing assumptions. The research suggests that some species have evolved natural biological defenses against cancer, which could inspire new approaches to prevention and treatment in humans.
Researchers found that terrestrial snakes on Sado Island coexist by differentiating their activity time, habitat, and diet. Niche complementarity among species with overlapping food resources reduces overlap in other dimensions.
A recent study by Indian Institute of Science found that tropical lizards, such as rock agamas, prioritize variable food sources over constant ones when hungry. This flexible approach helps them thrive in unpredictable conditions.
Two studies led by Dr. García-Moreno reveal birds' unique brain evolution, showing convergent evolution of neural circuits without homologous ancestors. Birds retained inhibitory neurons for hundreds of millions of years, while excitatory neurons evolved in new ways, highlighting the evolutionary flexibility of brain development.
The University of Texas at Arlington (UTA) has donated thousands of natural history books and journals to Ecuador's National Biodiversity Institute, expanding its research and education programs. The donation, valued at over 8,570 books, 2,000 journals, and 500 articles, will support the work of biodiversity specialists, students, and ...
The 'Under the Snakefluence' study surveys people in 20+ countries to understand public perceptions of snakes and assess educational efforts to promote safe coexistence. Research shows that delaying medical treatment can be fatal or cause permanent disability.
Researchers warn of environmental risks posed by snakes and insects in imported ornamental plants, calling for improved regulations and sustainable practices. The study highlights the difficulty of monitoring and controlling pests due to high-volume trade, posing a threat to ecosystems and human health.
The University of Texas at Arlington's Amphibian and Reptile Diversity Research Center (ARDRC) has expanded its library with a donation of over 10,000 rare items, including books, scientific journals, and reports. This addition will provide scientists worldwide with access to a wealth of literature on reptiles and amphibians.
A new species of flying reptiles, Melkamter pateko, has been discovered in the late Early Jurassic of Chubut province, Argentina. The find pushes back the origin of the advanced pterodactyloids by 15 million years, suggesting a more complex evolutionary history.
New information and guidance on monitoring and managing ranaviruses are provided in the second edition of Ranaviruses: Emerging Pathogens of Ectothermic Vertebrates. Ranavirus infections have been confirmed in over 177 species, causing mass die-offs and affecting biodiversity.
A team of biologists at UT Arlington has discovered a new species of gecko, Pseudogonatodes fuscofortunatus, with distinct skeletal features and genetic data. The discovery highlights the unique characteristics of this tiny lizard, found in the Paria Peninsula of Venezuela.
Researchers from The University of Texas at Arlington are conducting a DNA analysis project to determine the genetic differences between the rare Dixon's whiptail and the common checkered whiptail. If the two species are found to be distinct, Dixon's whiptail may become eligible for endangered species protection.
A targeted outreach initiative in Palm Beach County led to an increase in reported sightings of invasive reptiles, including Nile monitors and Argentine black-and-white tegus. The effort engaged over 112,000 people and resulted in 55 reported sightings, highlighting the effectiveness of community involvement in detecting invasive species.
A Simon Fraser University study ranks Canadian terrestrial vertebrates by their level of evolutionary distinctness, finding that amphibians and reptiles are the most distinct species. The spiny softshell turtle is the most evolutionarily distinct terrestrial animal in Canada.
A decade-long analysis of wildlife rescue records in NSW reveals a bias towards larger reptiles, with two species accounting for almost two-thirds of all rescues. Human behavior and environment play significant roles in shaping these interactions.
Scientists developed VenomCap to analyze venom genes in snakes, shedding light on snake evolution and developing effective treatments for deadly snake bites. The technique enables quicker analysis of thousands of venom-making genes, paving the way for improved antivenom development and global public health.
Researchers have discovered a remarkably preserved fossil site in Massachusetts that provides a rare glimpse into terrestrial life from over 300 million years ago. The findings reveal a diverse ecosystem of early land-dwelling animals and plants, including some of the oldest known examples of their groups.
Researchers at Cornell University have discovered an easy-to-reach location on the back of a reptile's head to take their pulse rate, corresponding to heart rate in healthy animals. This technique allows for a more complete cardiovascular examination and can be used to treat animals under anesthesia or when they're feeling defensive.
A recent study reveals tarantulas have mutually beneficial relationships with various species, including amphibians and army ants. The spiders' dense hair may serve as a defense mechanism against these predators. Tarantulas also employ unique escape strategies and potentially utilize chemical defenses to deter attacks.
A group of scientists discovered that the Black and white tegu lizard can raise its own body temperature during the reproductive season, even in a dark burrow. The study found that this phenomenon is due to the increased production of mitochondria and a protein called ANT, which generates heat.
A global database of animals with four feet has identified significant gaps in tetrapod knowledge, including biases in biodiversity data. Researchers used artificial intelligence to predict missing data and improve the accuracy of ecology, evolution, and conservation studies.