Fossil remains of Lystrosaurus (an extinct four-legged animal) have been discovered in India and South Africa. When they were living, all the
Lystrosaurus lived together on land, and they could not swim. However,
now there is an ocean between the Lystrosaurus fossils. What could
explain how these fossils got so far apart?

India and South Africa are parts of different plates. The plates slowly moved apart as new plates from underneath got added between them over millions of years.

Explanation:

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spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.