In 1991, alligator bones
were found on the banks of the Amazon River. The skull was almost 5 feet
long. Based on this, scientists estimated its height to have been 8 feet
(when walking) and its length 40 feet (the size of a railroad boxcar).
"Professor Carl Frailey, from Overland Park, Kansas, said the
creature probably weighed around 12 ton. `This would make it about a ton
heavier than Tyrannosaurus Rex... the mightiest of dinosaur
predators', he said." In short, if reptiles today lived longer, they would
be "dinosaurs" in a few hundred years." (super croc image from
Mega Fauna--No Real Place in Evolution
One reason that Giant mammals aren't currently well known is
that they aren't discussed very much by the scientific community--not like
dinosaurs are. Evolutionary theory doesn't do that great a job
of explaining why such large animals were the ancestors of the smaller
animals living today.
It's one thing if all these extinct animals are different species than exist
today (and in some cases they are) but quite another if the primary
difference is that they were giant animals. Scientists solve this problem by
the use of the scientific term: "LIKE". For instance, if a 12 foot
St. Bernard were to walk across their lawn, they would describe it as a
"Dog-Like creature, rather than a dog.
One theory that has been advanced by creationists science is that prior to
the flood, a vapor canopy covered the earth; some theorize that the vapor
canopy would have blocked out harmful radiation which gets through now.
Further, the canopy would have created an almost perfect year round
temperature. There is of course no way to prove this theory but the fact
that plants, animals and man were bigger than they are today can be seen
from the fossil record.