Alligator gar haven’t changed since the prehistoric days they ... a primitive era resemble ancient ocean-going reptiles more than they look like modern fish. Think plesiosaur with a shorter ...
This leisurely rate of change means these prehistoric fish have the slowest rate of molecular evolution among all jawed vertebrates. The gar (family Lepisosteidae) lineage stretches across ...
Researchers have discovered a 380-million-year-old heart preserved inside a fossilised prehistoric fish. They say the specimen ... the fishes that live in the sea today." ...