The 248-million-year old fossil of an ichthyosaur suggests that live-bearing
evolved on land and not in the sea," Dr.
There are many, but unnamed, forms of the kind of the four-footed and live-bearing
animals; though each on its own is named, just as man is named, lion, deer, horse, dog, and the others are in turn, and yet there is one certain kind alone called the bushy-tails, such as horse, ass, mule, jennet, and the one from Syria called half-ass.
The study noted that live-bearing
lizards, as opposed to those that lay eggs, are particularly at risk.
If the tree was correct, the molar thought to belong exclusively to live-bearing
mammals had evolved separately in the egg-laying monotremes.
It is a small member of the Poecilidae family (females 3cm long, males 2cm) and like all other members of the family, is live-bearing
2000) recently reported male-biased sex ratios in embryos of the marine live-bearing
eelpout, Zoarces viviparous, exposed to paper mill effluent off the coast of Sweden.
Two exotics, the live-bearing
mosquitofish and mouth-brooding tilapia can survive.
Ecology and evolution of live-bearing
They selected live-bearing
guppies for large and small brains relative to the size of their bodies.
Then, Michael Bull of Flinders University in Adelaide, Australia, reported that some of Australia's big, live-bearing
skinks are monogamous.
The find is important because "it means that an advanced form of reproduction involving copulation and live-bearing
was more widespread than previously thought.
7 centimeters) the very old (a fossilized specimen of the oldest known live-bearing
vertebrate) and the very twisted (a snail whose shell twists around four axes).