Early mammal could bite like a snake

June 22, 2005

A small mammal that lived around 60 million years ago had poisonous fangs that enabled it to bite like a snake, the first time that an extinct mammal species has been found with this capacity, a new study says.

The fossilised remains of two curved canines, found in the Canadian province of Alberta, shows a groove from which the creature, Bisonalveus browni, probably shot venom into its prey.

Only a small number of modern mammals, including the duck-billed platypus and a rat-like creature called the Caribbean Solenodon, use venom delivery.

That rarity had led experts to conclude that, early in their evolution, mammals discarded the potential of venom as a way of defending themselves or getting food.

The discovery suggests, though, that mammals may have been far more flexible than was previously thought.

Some species must have developed special venom glands and the systems to deliver the poison, although how and why these evolved characteristics died out remain unclear.

The study, headed by University of Alberta palaeontologist Richard Fox, is published in Thursday's issue of Nature, the British weekly science journal.

(c) 2005 AFP

Explore further: Prescribed burning may benefit rattlesnakes

Related Stories

Prescribed burning may benefit rattlesnakes

June 7, 2016

A forest at first appears devastated after a fire, devoid of color. Ash and smoky plant remains cover the forest floor. In a few short weeks, however, shrubs and forbs will poke through the ash, taking advantage of the nitrogen ...

New insights into Australia's unique platypus

November 2, 2009

(PhysOrg.com) -- New insights into the biology of the platypus and echidna have been published, providing a collection of unique research data about the world's only monotremes.

Recommended for you

Force triggers gene expression by stretching chromatin

August 26, 2016

How genes in our DNA are expressed into traits within a cell is a complicated mystery with many players, the main suspects being chemical. However, a new study by University of Illinois researchers and collaborators in China ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.