yes it is.
Mass Extinction
Mass extinction.
Does this answer your question just a little bit?
If its environment merited them to need short legs or short legs made them survive longer, then a species would evolve short legs.
It is a short document, listing in a few hundred words or less the main points of Charles Darwin's seminal work, On the Origins of Species.
Mass Extinction
Mass Extinction
Mass Extinction
The extinction of a large number of species within a relatively short period of geological time. Caused by some catastrophic global event or widespread environmental change to which species can not adapt
animals extintion occurs due to short circuits
index fossils
the movement of large numbers of people over a fairly short time period.
a short period.
Adaptive Radiation is likely to produce a cluster of species in a short period of time.
For a while can be used to mean 'for a short period of time'.
Because of longline fishing and volcanic eruptions on Torishima. It also has a small breeding ground and limited diet so its very vulnerable. It was brought close to extintion by feather trade.
This perios is known the post-colonist period of galatic civilization. Many species around the outer rim planets of the termanis system, became extinct due to high methane gas levels results in various helth problems.