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Placental mammals were early insectivores and lived along with dinosaurs in the Late cretaceous. During cretaceous mass extinction, dinosaurs became extinct and opened up lots of dietary niches. The ancestral insectivore radiated out into all the niches and had 5 chitinase genes. But those who got adapted for other diets lost their chitinase genes through accumulation of various mutations. These gene remnants passed on to all mammals now exist, as pseudo genes.
Scientists have recently made an incredible discovery of a piece of amber that contained well preserved remains of an alomost complete bird hatchling. The discovery was made from Burma.
Poison dart frogs store Batrachotoxin, a steroidal alkaloid toxin in their skin glands. A single amino acid substitution is responsible for the resistance to their on poison in these frogs.
These predatory ants must have fed on soft bodied animals. When they encounter their prey, their clypeal hairs touch its body. This triggers the sudden closure of mandibles in upward direction. Pointed mandibles now pierce the prey’s body. Using the channels in mandibles, these ants can suck haemolymph (blood) out of the body of prey.
Useful selection of top zoology blogs for students and teachers of zoology. These handpicked blogs range from General zoology, Evolution, Marine biology, cryptozoology and many more. Any student of zoology will be interested in this list.
Take a close look at this, absolutely amazing! This deer was shot with an arrow years ago. Lucky, the shot was not fatal, the...
In each zones of sea floor, the living organisms are also extremely different. This infographic well provide an overview of fauna of under water universe.
A cephalopod is any member of the molluscan class Cephalopoda (Greek plural κεφαλόποδα, kephalópoda; "head-feet"). These exclusively marine animals are characterized by bilateral body...
© CECE PASCUAL See also Giraffe Neck Anatomy Giraffe Species of the World