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horses foxes and all other mammals have backbones. Also, birds and fish also have backbones.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoThe first known to man animal with a back bone has been discovered as the Muck, as the name known to man now.
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In what era did life first appear?
Pre-Cambrian. It's when bacteria first came about.
What era did first life appear?
Pre-Cambrian. It's when bacteria first came about.
When did the first insect appear?
400 million years ago
When did mammals first appear on earth by paleontologists?
Mammals first appear in the fossil record of the Mesozoic Era.
What era did the first dinosaur appear in?
The first dinosaurs lived in the beginning of the Mesozoic Era (or the Age of Reptiles). Birds were amazingly discovered to be dinosaurs so dinosaurs were also alive in the Cenozoic (that's our time-the Age of Mammals) to today.
What era did the first animals with both teeth and fins appear?
Silurian
In what era did most types of animals first appear?
before time even started when mesopotamians were alive.
In what Era did the first land dwelling organisms appear?
the paleozoic era
In what era did the first forest appear?
Mesozoic
What era did the first forests appear?
Mesozoic
In what era did vertabrates appear?
Vertebrates first appeared during the Paleozoic era.
What era did saber-toothed cat first appear?
probably mesozoic era
When did flying insects first appear?
the cenozoic era
In what era did life first appear?
Pre-Cambrian. It's when bacteria first came about.
What era did first life appear?
Pre-Cambrian. It's when bacteria first came about.
When did cockroaches first appear?
Actually they were from the Pennsylvanian Period and the Paleozoic Era...
When did land based animals first become common?
Land based animals first became common in the Paleozoic Era. It is the earliest era of the 3 in the Phanerozoic Eon.
