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Silurian Period 408 - 438 Million Years Ago
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoPennsylvanian Period..........by R.E
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What period did insects first appear?
The first insects appeared in the Devonian, over three hundred fifty million years ago.
When did the first multicellular organism appear?
Multicellular organisms first appeared during the Vendian period.
What period did human ancestors first appear?
Humans first appeared during the Quanternary Period which includes the Pleistocene and Holocene epochs.
What period did human ancestors first appear in?
Humans first appeared during the Quanternary Period which includes the Pleistocene and Holocene epochs.
What period did whales first appear?
The period where whales first appeated is to be during the Eocene Epoch (56-34 Million Years Ago).
When did small furry animals appear?
The first mammals appeared during the Cretaceous Period.
When did the cycad first appear?
they first appear in prrmian period
When did flying insects first appear?
the cenozoic era
When did first trilobbites appear on Earth?
About 526 million years ago during the early Cambrian period.
When did the first flowers appear?
In the Cretaceous period.
What happened during the Pennsylvanian period?
One is that the first reptiles (not dinosaurs!) appeared. The land during this peiod was swamp-forests.
When did presumed animal fossils first appear?
The presumed animal fossils first appeared during the Archaean Cambrian period. There is no clear indication why they appeared this late into history.
