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Why are there gaps in the fossil record particularly at the end of the Paleozoic and Mesozoic eras?
Lamorena87
Apparently, and with evidence, these were periods of global catastrophes (for life-forms) where massive numbers of organisms went extinct.
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∙ 14y ago
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Did the first vertebrates evolve during the mesozoic era?
No. The 1st vertebrates appeared in the fossil record about 525 million years ago during the Cambrian Period. This was in the Paleozoic Era.
What main characteristic distinguishes the fossil record of the Paleozoic Era from that of the Precambrian Era?
In the beginning of the Paleozoic Era, animals began to develop hard parts like shells and bones.
What was the two new plants that came during the mesozoic era?
There were actually three types of plants that evolved in the Mesozoic. Cycads and ginkgos evolved around the late Triassic and early Jurassic. The firsts flowering plants appear in the fossil record during the early Cretaceous period of the Mesozoic era.
When did mammals first appear on earth by paleontologists?
Mammals first appear in the fossil record of the Mesozoic Era.
What is the chronological collection of life's remains found in layers of rock?
The answer is the fossil record :D
Did the first vertebrates evolve during the mesozoic era?
No. The 1st vertebrates appeared in the fossil record about 525 million years ago during the Cambrian Period. This was in the Paleozoic Era.
Fossil record began in this era?
Mesozoic era
The most complete fossil record of past invertebrate life in NJ can be found in rocks of with era?
paleozoic
What main characteristic distinguishes the fossil record of the Paleozoic Era from that of the Precambrian Era?
In the beginning of the Paleozoic Era, animals began to develop hard parts like shells and bones.
Abundant fossil evidence did not appear in the geologic record until about?
Geologic records evidence of abundant fossil is 540 Million Years ago during the Paleozoic Era.
What could provide direct evidence for evolution?
One way to check evolution is to compare genomes. Another even more direct method is by observing instances of speciation in nature, such as the acquisition of novel traits in bacteria (antibiotic resistance) or the inability to interbreed (various insects, chichlid fishes, etc.) The fossil record provides excellent indirect evidence for evolution. None of the mammals that exist today can be found in paleozoic or mesozoic strata. The fossil record tells us mass extinctions occurred multiple times through geologic history, followed by periods of fairly rapid diversification as new ecological niches were subsequently filled. Flowering plants are rife in the current Cenozoic fossil record, but entirely absent from the paleozoic, and only a few primitive forms are known from the late mesozoic. This indirect evidence is highly suggestive of an evolutionary process.
What was the two new plants that came during the mesozoic era?
There were actually three types of plants that evolved in the Mesozoic. Cycads and ginkgos evolved around the late Triassic and early Jurassic. The firsts flowering plants appear in the fossil record during the early Cretaceous period of the Mesozoic era.
When did abundant fossil evidence first appear in the geologic record?
The first abundant fossil evidence first appeared during the Paleozoic Era. It was the first era of the Phanerozoic Eon, which occurred 540 million years ago.
When did mammals first appear on earth by paleontologists?
Mammals first appear in the fossil record of the Mesozoic Era.
What is the chronological collection of life's remains found in layers of rock?
The answer is the fossil record :D
What is fossil record?
The fossil record is the information about the fossils found in a particular location.
How are fossil organized in the fossil record?
The fossil record organizes fos- sils by their estimated ages and physical similarities.
