Sentence examples for extant group from inspiring English sources

Others naturally require more thought and evidence, but a good analogy with an extant group can provide a firm hypothesis for testing, for example as seen in trilobites with their eyes on stalks which are remarkably similar to the stalk-eyed flies that are alive today, and in the latter we know that the stalk is sexually selected.

From the evidence, it is impossible to be certain that a transitional fossil is actually the ancestor of any extant group.

The teratorns held sway over the ecological niche of the extant group especially in North America.

Their most recent common ancestor with any other extant group is with the squamates (lizards and snakes).

Har Dayal's extant group was found to have strong links with Rash Behari Bose, and were "cleaned up" in the wake of the Delhi bomb case.

This genus is the only extant group in the tribe Bombini, though a few extinct related genera (e.g., Calyptapis) are known from fossils.

It dominates social behaviour in extant groups.

The following synopsis, based on their work, provides principal identifying characteristics of all major extant groups.

The seed plants completely lack antheridia, and of the extant groups only the ginkgo and the cycads have flagellate sperm.

Therefore, it is clear that birds did not go through a "bottleneck" of extinction at the end of the Cretaceous that separated the archaic groups from the extant groups.

A variation of this would be to also exclude the extinct members of the forbidden extant groups.