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Yes, the first ammonites lived during the Devonian Period. This was about 370 million years ago. The Devonian Period was a part of the Paleozoic Era.
Dinosaurs did not appear until the Triassic, approximately 230 million years ago.
HTH,
Dr. C.
Wiki User
∙ 8y ago
Wiki User
∙ 15y agoFrogs and dinosaurs are two completely different types of animals, but both frogs and dinosaurs first appeared about 230 million years ago.
Wiki User
∙ 15y agoYes we even had a ancestor amphibians before the dinosaurs!
Wiki User
∙ 14y agoNo the trilobite was an arthropod not an amphibian.
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Why do scientists believe that birds evolved from dinosaurs?
Birds are thought to have evolved from bipedal dinosaurs.
Did mosses live longer than dinosaurs?
Yes. Mosses were around long before the dinosaurs were.
What time period came before the Jurassic period?
Before the dinosaurs there was a plethora of life including fish, trilobites, lungfish, amphibians, and plenty more. In the Proterozoic era (2 billion to 650 million years ago) there was an assortment of single-celled and simple multi-celled creatures. The next 200 million years (early Paleozoic) showed a great expansion of life in the seas, including a diverse assortment of corals, mollusks, trilobites, sponges, shrimps, and other creatures. the next 150 million years (late Paleozoic) included the development of fish, land plants, insects, amphibians, and ultimately reptiles and flowering plants. The earliest dinosaurs began roughly 250 million years ago (the Mesozoic).
Fossil of dinosaurs are found in Cretaceous rock but not in tertiary rock?
All dinosaurs went extinct before the tertiary period.
Were all dinosaurs reptiles?
No way! There were thousands of species of reptiles that lived both during, before, and after the dinosaurs lived on earth. There were the synapsid reptiles, as well as the anapsid reptiles, which were mostly gone when the dinosaurs arrived. There were also many diapsid reptiles that lived during the time the dinosaurs did. Such species include deinosuchus, dimetrodon, gorgonops, Quetzalcoatlus, and rutiodon. Dinosaurs were not reptiles themelves. They evolved from reptiles, many had warm blood even feathers,
What came before the dinosaurs?
Fish, then amphibians then to reptiles then so on...
Were long-necked dinosaurs amphibians?
No, dinosaurs were not amphibians. Dinosaurs are classified as reptiles.
What came before the fish amphibians reptiles and dinosaurs?
Fish, reptiles, and amphibians, originated in that order during the Paleozoic era.
Are dinosaurs more closely related to amphibians than reptiles?
No, dinosaurs are more closely related to reptiles than amphibians. Both dinosaurs and reptiles belong to the group called diapsids, which are characterized by having two openings in the skull behind the eye socket. Amphibians, on the other hand, belong to a different group called tetrapods.
Are dinosaurs amphibians?
The term 'dinosaurs' refer to any of numerous extinct terrestrial reptiles of the Mesozoic era - ergo, they were not amphibians.
Were frogs around during the time of the dinosaurs?
Frog fossils have been found dating to the Jurassic period. The Jurassic period was the middle period in the middle of the Mesozoic. The Mesozoic was the era in which all dinosaurs lived, so frogs and dinosaurs did coexist.
Are dinosaurs more closely related to amphibians or mammals?
Dinosaurs are more closely related to mammals. Both mammals and dinosaurs share a reptilian ancestor that they don't share with amphibians.
Were dinosaurs mammals or amphibians?
Neither...They were reptiles. dinosaurs were nether amphibians or mammals they were all reptiles, though they are more closely related to birds.
Are dinosaurs related to amphibians or reptiles?
Reptiles
Do scientist think dinosaurs are related with amphibians?
yes
Do scientists think dinosaurs are amphibians or reptiles?
no, they are considered to be an actual type of reptile.
Where there dinosaurs around in the Paleozoic era?
Unfortunetly,No.There were not any dinosaurs during the Paleozoic era.However the dinosaurs or other reptiles evolved from amphibians.
