Tag: "reptiles" at biology news

Science Report: Super-crocodile crawls out of the African Cretaceous

...ave uncovered six different species of crocodilian reptiles at the Niger site, ranging from the modest to the monstrous, and including a bite-sized crocodile that Sereno describes as "not much more than an Oreo cookie" to Sarcosuchus . "That's the fascinating thing about crocodile evolution. It seems like mo...

World's smallest lizard discovered in Caribbean

...scribed more than 50 new species of amphibians and reptiles throughout the Caribbean, mostly for genetic and evolutionary studies. Finding them, collecting them, and naming them is a necessary first step for other types of research. Hedges says this exploration and discovery of new species also is critical ...

Worlds smallest reptile discovered in Caribbean

...allest amniote, a group consisting of all mammals, reptiles and birds. Although much is still unknown about the diversity of life in the Caribbean, Michael Smith, Senior Research Fellow for the Center for Applied Biodiversity Science at Conservation International, says we have enough information to appreciat...

New theory of the evolution of bird flight linked to parental care

Modern birds evolved from ground-dwelling reptiles as their increasingly refined parenting skills led...behavioral changes that appear to have occurred as reptiles evolved into winged dinosaurs and finally into modern birds, Carey says. He suggests that modern bir...

First genetic evidence uncovered of how major changes in body shapes occurred during early animal evolution

...e change of one living thing into another, such as reptiles and birds. This process, called macroevolution, has never been observed and should be considered a theory." "The creationists' argument rests in part on the fact that animals have two sets of chromosomes and that in order to get big changes, you'd ne...

UNC geologist, students to unveil 221 million-year-old top N.C. fossil

...udents also found a whole suite of bones where the reptiles stomach would have been, Carter said. Included was another new mammal-like reptile, which Drs. Hans-Dieter Sues of the Royal Ontario Museum, Paul Olsen of Columbia University and Carter have named Plinthogomphodon herpetairus. Also in the stomach we...

Scientists from Syracuse University and the Netherlands create first global map of grazing mammal biodiversity

...as hotspots for the biodiversity of plants, birds, reptiles and other types of mammals, Ritchie says. Thus, the areas we have identified for plant-eating mammals would have to be conserved separately. Large plant-eating mammals, such as bison, antelope, giraffes, hippos and elephants are among the most visi...

Proliferation of Argentine ants in California linked to decline in coastal horned lizards

...Horned lizards may be one of the few 'charismatic' reptiles people might care about in California," notes Fish... who has been conducting a comprehensive survey of reptiles and amphibians from Los Angeles to the Mexican border since 1995. "Many people remember finding hor...

Ambushing prey may make snakes vulnerable

...ogy. Australia has a rich diversity of terrestrial reptiles -- about 700species compared to fewer than 250 spe...U.S., which is aboutthe same size. Most Australian reptiles are so little known thatbiologists can't even assess their conservation status. To help find a simpl...

Study of fossils found in arctic shows plants more developed at earlier time

...hose creatures, which predated dinosaurs and other reptiles by some 50 million to 100 million years, were the largest animals ever found on land up to that time in North America. Much of science is devoted to understanding and curing diseases, and thats as it should be, Gensel said. However, we also need to u...

Unique feeding behavior discovered for snakes

...old Voris, co-author and curator of amphibians and reptiles at The Field Museum. "Gerarda prevostiana is the only snake to tear oversized prey apart, yet you could not have predicted this on the basis of its morphology [form and structure]. It appears to have accomplished this feat solely through a unique beh...

Cambodian government creates 1,000,000-acre protected area

...a's large mammals and half of the country's birds, reptiles and amphibians. Two wildlife sanctuaries border the area, bringing the total land under protection to 2.44 million acres (990,000 hectares), forming the largest, most pristine wilderness in mainland Southeast Asia. The protected area was officially...

U of C researcher tracks path of flying snake

...wim and climb. Can you imagine if these slithering reptiles could fly? Some actually can. More precisely, they glide or parachute in the same fashion as a flying squirrel, frog, lizard or fish. University of Chicago biologist Jake Socha has been studying the gliding patterns and biomechanics of these airborne...

Dinosaur ancestor's vision possibly nocturnal

... the ancestral state in amniotes, which are birds, reptiles and mammals whose embryos are protected with a fluid-filled sac," says Belinda S.W. Chang, Ph.D., first author and research assistant professor at Rockefeller. "We are doing further biochemical studies on this recreated pigment to clarify this issue....

UGA student questions why snakes cross roadways

...scientific literature on herpetology (the study of reptiles and amphibians), she came up with a twist on the old riddle: "Why do snakes cross the road?" Gibbons -- a noted herpetologist who's also a senior researcher at the Savannah River Ecology Laboratory (a research unit of UGA) -- was stumped. Andrews smi...

Popular weed killer feminizes native leopard frogs across Midwest

...fects on aromatase have been demonstrated in fish, reptiles and mammals, but not yet in amphibians. Atrazine is so widespread that it can be found far from agricultural areas and even in rainwater and snow. At one site in Nebraska, Hayes found that rain and tap water contained enough atrazine to disrupt norma...

UN Foundation & Conservation International forge $15M partnership to protect global biodiversity

...a's large mammals and half of the country's birds, reptiles and amphibians. Two wildlife sanctuaries border the area, bringing the total land under protection to 2.44 million acres (990,000 hectares), forming the largest, and most pristine wilderness in mainland Southeast Asia. The UN Foundation is also expl...

Biologists raising baby loggerhead turtles for conservation find disturbing gender trend

...nimals been caught for food, but the air-breathing reptiles also have been trapped and drowned inadvertently in fishermen's nets. Additionally, beach development has deprived the turtles of nesting sites. In response to research by Crowder and other scientists, the National Marine Fisheries Service now requ...

New study suggests missing link that explains how dinosaurs learned to fly

...link two current and opposing explanations for how reptiles evolved into flying birds. According to Kenneth Dial, author of the report, the transition from ground travel to flight may have required a "ramp-up" phase in which rapid movement of the animals' front appendages actually forced its body downward to...

Prehistoric tusks point to earliest fossil evidence of differences between sexes

...art of a group of animals described as mammal-like reptiles and was an evolutionary relative of the animals that evolved into mammals. Diictodon, which was covered in scales and measured about one metre in length, was a burrowing herbivore with a beaked skull and short tail. In its investigation, the team wa...

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