Megalania refers to an extinct giant goanna or monitor lizard ,  recognised as either Megalania prisca or Varanus priscus. They were part of the megafaunal assemblage that inhabited southern Australia during the Pleistocene. The youngest fossil remains dated to around 50, years ago. The name Megalania prisca was coined in by Sir Richard Owen to mean “ancient great roamer”; the name was chosen “in reference to the terrestrial nature of the great Saurian”. The close similarity to the Latin word: lania feminine form of “butcher” has resulted in numerous taxonomic and popular descriptions of Megalania mistranslating the name as “ancient giant butcher. Owen introduced the genus Megalania to accommodate the species Megalania prisca. Its status as a valid genus remains controversial, with many authors preferring to consider it a junior synonym of Varanus ,   which encompasses all living monitor lizards.
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What were you hoping for? Someone I had a genuine connection with and would enjoy spending time with. First impressions? Very easy to chat to, with a warm, inviting personality to match. She instantly put me at ease.
A new treatment for Type 2 diabetes based on a hormone discovered in the Gila lizard is now available in the (Exenatide) is a synthetic copy of the.
From Tinder to Grindr, hooking up to settling down, the options for finding love or at least sex seem limitless and overwhelming. But by applying a bit of game theory — where mathematics is used to understand interactions between independent decision makers — we may be able to think through our choices in a clearer, or at least more logical, way.
The strategies that we adopt in our real-life relationships can be explained, according to game theorists, by computer models that predict how to get the most from your interactions with others. But, like with all human behaviours, a complicated mix of toing and froing means the best strategies often go in and out of fashion. Game theorists have shown that if two people knew their relationship would be short, they were more likely to cheat. If, on the other hand, the relationship had no forseeable end, they tended to cooperate.
Game theorists have been applying their work to relationships for decades. Political scientist Robert Axelrod popularised some early experiments in his book Evolution of Cooperation. However, applying theoretical computer models to complicated human interactions is imperfect when the models might not be realistic enough. This forced game theorists to incorporate more complicated decisions, such as whether we maximise our chances if we date only one person at a time, or several people simultaneously.
Find out why we might be set for a new sexual revolution. Within the biological sciences, John Maynard Smith proposed a variant called evolutionary game theory. Specifically, they look at what kinds of relationship strategies a species develops — for example, do they have a single, multiple or fluid number of partners?
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He is greenish brown, has dragon scales for skin, grows up to 32 inches and is the world’s last remaining lizard-like reptile that has a lineage dating back to about million years when dinosaurs still roamed the earth—he’s a tuatara and he’s making a comeback. A species native to New Zealand, the tuatara was spotted nesting in a sanctuary close to Wellington last week, the first such sighting in years.
Staff at the acre Karori Wildlife Sanctuary stumbled upon four white, leathery ping-pong sized tuatara eggs during routine maintenance work at the end of last week. A rare find, the nest is the first concrete proof that tuatara are breeding again, said sanctuary officials of the species that, unlike other reptiles, has two rows of top teeth and a light-sensitive “third eye” on its forehead, which is visible for about six months when it hatches.
In an effort to save the species that once flourished in the Mesozoic Era and almost neared extinction in the s because of the introduction of predators like rats, the Karori Sanctuary created 70 tuatara in and another in , before releasing them into the wild.
That foolish lizard won’t know what hit ‘im. Then, for good measure, bite off its head. Nobody likes that part, anyway. You can save it for me, if you.
Crime, horror, humor, it’s all in there. I literally cannot recommend this book highly enough. He has been given the position of security guard at the headquarters of a chain of fast food restaurants called Pick-A-Chicken. There, like choosing a lobster in a seafood store, you literally pick your own chicken for slaughter, and for a bit of extra cash, you can do it yourself with a company hatchet. Buster hates it. He even hates the fried chicken they make, and he has a discount.
In fact, appeasing the Lizard God is a family tradition dating way back. One night, while checking doors, Buster hears chanting in a storage facility, discovers a supernatural ritual, accidently upsets a flaming brazier that not only destroys the ceremony, but sets his employer on fire with the literal flames of hell. Buster ends up in the burn unit, and not long thereafter, discovers that the botched supernatural ceremony has given him the power to transform into a big lizard who can run fast, has incredible strength, a large tail, and a hard time not ripping his pants.
With a rag tag crew, including, Socrates, a surviving eye-patch wearing chicken scheduled to have been one of the sacrifices, a teenage tech wizard named Isaac who lives in the remains of a Biblical theme park dedicated to Noah and shaped like an ark, Buster sets out to battle evil. Prominent on his evil list is his old boss, Elroy Cuzzins. The same supernatural accident that changed Buster into Big Lizard, has transformed Cuzzins into an angry, giant chicken that drives a red sports car and commits serial killings.
Through lack of imagination, Cuzzins is given the moniker, Big Chicken.
Oxford University Press
Phone: Email: team steelheadalleyoutfitters. Apr 20 million years, their dogs. By implying that has never. Zoosk is, the parking.
To date over 20, sightings from more then contributors dating as far back as have been received and processed. The observations cover over
Hey, human. Because you look great. I know I have limited romantic experience because you got me fixed when I was a kitten, but cats are wise. We know a thing or two. If you want this first date to turn into a second date, you need to listen to me right meow. Let me tell you how to land this guy and make him crazy about you in the process. Are you ready? I know you have impeccable taste in choosing gifts. Every time you come home with a bag of treats or a new catnip mouse for me, I always marvel at your ability to figure out exactly what I wanted.
But you know what? The best gifts come from the heart. Instead, show off your hunting prowess by getting out there and catching him one of those scrumptious lizards from the backyard. I do it all the time, so I know you can do it, too.
Fossil of Gordodon dating back 300 million years rewrites ‘known evolutionary timeline’
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Lizard keepers also perform poorly, with 39% of Britons saying they would be less willing to date one and only 7% saying they would be more.
Photo taken on June 24, shows the fossil of an extinct genus of lizard dating back about million years, which was found in northeast China. Photo provided to Xinhua. Researchers from China University of Geosciences announced Tuesday that they have discovered a fossil of an extinct genus of lizard dating back about million years in northeast China. Different from previous discoveries in the same area, researchers found remains of a large crawfish in the lizard’s stomach, including cheliped, a broken pereiopod and tentacles, which look like today’s crawfish.
Although the Yabeinosaurus lacked obvious morphological aquatic features, it had a habit of hunting on riverbanks, according to Xing. Researchers said the discovery is of great significance for studying small and medium-sized reptiles’ predation habits in the Cretaceous period. Yabeinosaurus, discovered in , is a common saurian fossil in Jehol Biota of northeastern Liaoning Province.
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Why Is This Lizard Doing Push-Ups?
This ancient reptile was an archosaur — part of the same group that would later include dinosaurs, pterosaurs and crocodilians. Scientists recently discovered a partial skeleton of the lizard dating to million years ago, a time when Antarctica was bursting with plant and animal life. Not only does the fossil of this former “king” provide a sharper picture of the forest landscape in long-ago Antarctica, it also helps to explain the evolutionary landscape following the biggest mass extinction in Earth’s history, scientists reported in a new study.
Though the lizard fossil was incomplete, researchers were able to tell from the fused vertebrae that the animal was an adult reptile, and it likely measured about 4 to 5 feet 1. They dubbed it Antarctanax shackletoni : The first part of its name comes from the Greek words for “Antarctic king;” the second part is a nod to pioneering British polar explorer Ernest Shackleton , who named the Beardmore Glacier — where many Antarctic fossils, including Antarctanax , have recently been found — following an expedition in Subtle features in the bones of the lizard’s spine and feet indicated that it was a new species, and its foot shape suggested that it lived on the ground, scampering over the forest floor, lead study author Brandon Peecook, a Meeker Postdoctoral Fellow at the Field Museum of Natural History in Chicago, told Live Science.
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Metrics details. Lepidosauria lizards, snakes, tuatara is a globally distributed and ecologically important group of over 9, reptile species. The earliest fossil records are currently restricted to the Late Triassic and often dated to million years ago Mya. As these early records include taxa that are relatively derived in their morphology e.
Brachyrhinodon , an earlier unknown history of Lepidosauria is implied. However, molecular age estimates for Lepidosauria have been problematic; dates for the most recent common ancestor of all lepidosaurs range between approximately and Mya whereas estimates for crown-group Squamata lizards and snakes vary more dramatically: to Mya.
This uncertainty restricts inferences regarding the patterns of diversification and evolution of Lepidosauria as a whole.
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Here, I combine previously underutilized models and priors to perform more biologically realistic phylogenetic inference from morphological data, with an example from squamate reptiles. When coding morphological characters, it is often possible to denote ordered states with explicit reference to observed or hypothetical ancestral conditions. Using this logic, we can integrate across character-state labels and estimate meaningful rates of forward and backward transitions from plesiomorphy to apomorphy.
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Evolution and paleontology
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The world’s oldest lizard-like reptile, with roots dating back to the Triassic period, has been found breeding again for the first time in years.
The temperate South American lizard genus Liolaemus is the one of the most widely distributed and species-rich genera of lizards on earth. Owing to a lack of reliable fossil data, previous studies have been forced to use either global molecular clocks, a standardized mutation rate adopted from previous studies, or the use of geological events as calibration points. However, simulations indicate that these types of assumptions may result in less accurate estimates of divergence times when clock-like models or mutation rates are violated.
We used a multilocus data set combined with a newly described fossil to provide the first calibrated phylogeny for the crown groups of the clade Eulaemus , and derive new fossil-calibrated substitution rates with error of both nuclear and mtDNA gene regions for Eulaemus specifically. Divergence date estimates for each of the crown groups and appropriate rate estimates will provide the foundation for understanding rates of speciation, historical biogeography, and phylogeographical history for various clades in one of the most diverse lizard genera in the poorly studied Patagonian region.
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