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53 N. Macdonald
Mesa, AZ 85201
(One block north of Main Street in downtown Mesa.
Take US 60 or 202 to Country Club Drive, go to Main
Street, and proceed one-half mile east to
Macdonald) -
View
Map
Phone:
480-644-2230
E-mail |
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Walk Through Time (cont'd)
Cretaceous Seas
Mosasaurs are not closely related to other
marine reptiles but are in actuality gigantic
lizards that have returned to the sea from the land.
Fragmentary remains have been found in the
Cretaceous seas covering northeastern Arizona 100
million years ago.
Mosasaur |
Pliosaur |
Trinacromerum was a marine reptile
belonging to the pliosaurs, the short-necked
plesiosaur group. She lived in the Cretaceous seas
covering northeastern Arizona 100 million years ago.
First Flight
Flight is an innovation that has evolved several
times in the animal kingdom. Pteranodon was
one of the larger flying reptiles, with a wingspan
of as much as 30 feet. They lived about 75 million
years ago during the Cretaceous Period.
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