"This specimen is really rare," said Modesto, who was the principal investigator of the project. "It's the only specimen we know of from this particular part of the Carboniferous and it's the only reptile from that slice of time."

The research will be published in the journal Proceedings of the Royal Society B on Wednesday.

Modesto said the fossil was discovered by a boy and his family on their farmland in Prince County, P.E.I., more than 14 years ago. It was taken to the Royal Ontario Museum in 2004 and about four years ago, Modesto and his team started their research.

The fossil, erpetonyx arsenaultorum, was named after the Arsenault family who made the discovery.

Dean thinks the snake may have been curled up in a pair of thick socks which he had also bought on Saturday’s shopping trip.

He added: “I think it’s maybe been keeping warm in them before coming out once I arrived back.”

Wayne Mailer, who runs Dragons Den Exotic Pets in Newcastle, said: “Looking at the picture, this appears to be an Amery Corn Snake.

“I think it’s probably only a hatchling maybe only a few weeks old . At the minute it doesn’t appear to be in the best of health, probably due to the cold weather.

“More than likely, it is an escapee pet.”

Using four different species of leaf litter frogs, they replicated and sampled 10 plots per year, using a plot survey technique of total leaf litter removal within each plot. They measured and sampled annual species diversity and community composition once a year during March, during the dry season, at the Organization of Tropical Studies Las Cruces Biological Station in southern Costa Rica.

Their findings were surprising in that strictly terrestrial frog species (i.e., they do not breed in water) can be influenced by extreme rainfall events much like their aquatic-breeding counterparts. The researchers discovered that species diversity and the community structure changed negatively in dramatic fashion from the two pre-La Niña years compared to the onset of the La Niña event in 2010.

The altered community structure due to extreme rainfall lasted for over 20 months. During that time, all four leaf litter frog species declined in number and several measures revealed marked changes in the community structure in terms of both plot diversity and occupancy.

Some scientists are raising concerns about the practice. Little is known about the region's sea snakes, including what species and how many live there, so it's not clear whether the harvest is sustainable.

An overharvest, these researchers worry, could jeopardize potential medicinal discoveries. Compounds in venom, once processed and administered in controlled amounts, can be beneficial in treating human ailments like heart disease.

The sea snake catch—a side job for the region's Vietnamese squid fishers—takes in over 80 tons (73 metric tons) of the marine reptile annually. That's roughly 225,500 individual sea snakes per year, valued at over $3 million.

"The I.cardamomensis species is only the second caecilian species ever discovered in Cambodia. The other is the striped Koa Tao Island caecilian, I. kohtaoensis, which is also found in, Laos, Myanmar, Thailand, and Vietnam.

These discoveries are important to demonstrate that much of Cambodia's biodiversity remains unknown and unstudied by science, and many more areas need to be searched," Thy said.

The forested Cardamom Mountains Range represents some of the largest remaining areas of habitat for more than 80 threatened species, including Asian elephant and gaur.

Thy said in recent years the Cardamom region had revealed its extensive reptile and amphibian diversity, including frogs, turtles, lizards and crocodiles.

Scientists from the Liverpool School of Tropical Medicine (LSTM) are working toward the development of a universal anti-venom that can be used for the bite of all of the snakes in sub-Saharan Africa with the aid of a new technique dubbed antivenomics.

The technique can help improve the potency of extracting snake venom and thus the potency of the antidote. Scientists hope that this breakthrough could help save thousands of lives per year.

In sub-Saharan Africa, snake bites cause the death of 32,000 people per year. Some of those who manage to survive likewise suffer from serious effects with snake bites permanently disabling 96,000 people in the region annually.

A new species of frog (Limnonectes larvaepartus) has been discovered in the rain forest of Sulawesi island in Indonesia. This species challenges the grade-school wisdom that taught us: ‘frogs lay eggs’. It looks like textbooks will need to be revised as this is the only known exception to that rule. Study author Dr. Jimmy McGuire (University of California, Berkeley) said the following as quoted in Reuters, “Reproduction in most frogs could not be more different from human reproduction. In this case, what is most interesting, ironically, is that the reproductive mode is more similar to our own.”

The rare reptile species are known as "radiated tortoises" and found only in Madagascar, customs officials said. The one-of-a-kind pattern on their shell case makes them precious for collectors.

The baby reptiles, 15 of which had died, were discovered in a crate carrying sea cucumbers on December 14. The officials added that "particularly unsuitable conditions of transport," was the cause of their death.

Those that have survived have been transported to Tortoise Village in France's southeastern Var region.