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The first insects appeared in the Devonian, over three hundred fifty million years ago.
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When did trilobites first appear in fossil record?
The first trilobites appear about the same time in Siberian, Moroccan and North American strata of about 524 million years of age, at the start of series 2 of the Cambrian Period. The first trilobites include fallotaspidoids Profallotaspis, Eofallotaspis, and Fritzaspis, but also include an ellipsocephaloid, Hupetina. For the role of trilobites in biostratigraphy, see this page: http://www.trilobites.info/biostratigraphy.htm
What From earliest to most recent what is the correct order in which organisms appear in the fossil record?
mendeleev creates a Periodic Table mendeleev predicts undiscovered elements moseley arranges the periodic table by atomic number a periodic table is created by mendeleev mendeleev predicts undiscovered elements the periodic table is arranged by atomic number by a man named moseley
How lond does your period stay when you first your period?
You can't predict how long your first period will last because you need to keep track of how long your first few lasts in order to predict how long one will last. For most people it lasts about a week.
What is the approximate age of the oldest trilobite?
Trilobites appear about 524 million years ago. The "First Appearence Datum" (FAD) of trilobites defines the start of the 2nd Epoch of the Cambrian Period. Trilobites therefore play a very important role in biostratigraphy of the Paleozoic.
First day of period light then no period at all?
well, one: you wouldn't bleed if you weren't on your period? two: usually its clumpy for the first few times you're on it. and three: it gets lighter over time.
During what period did the insects first appear?
Silurian Period 408 - 438 Million Years Ago
When did the cycad first appear?
they first appear in prrmian period
When did flying insects first appear?
the cenozoic era
When did the first flowers appear?
In the Cretaceous period.
When did the first flowering plant appear?
In the Cretaceous period.
When did crinoids first appear?
it occurs in the precambrian period.
What period did the first birds appear?
In the beginning of the world they were flightiness.
What was the first small thing to appear in the triassic period?
the coelophysis
Did flowers first appear in the Cambrian period?
No. Answer No, flowering plants (angiosperms) first appeared (as far as we know) in the Cretaceous 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.
When did cockroaches first appear?
Actually they were from the Pennsylvanian Period and the Paleozoic Era...
