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When did crinoids first appear?
it occurs in the precambrian period.
Which came first the precambrian or the mesozoic?
Precambrian eon4567.17-542 million years agoMesozoic era251-65.5million years agoSo precambrian came first...........
What is the oldest era geologically?
The oldest geological era is the Precambrian period. It is the period of Earth's formation, as well as the origin of the first single and multi-celled organisms.
What is the Precambrian Era Known for?
The Precambrian Era is known for being the longest geological time period in Earth's history, lasting over 4 billion years. It is characterized by the formation of the Earth, the evolution of the first life forms, and the development of the atmosphere and oceans. Additionally, the Precambrian is marked by the formation of the first continents and the origins of photosynthesis.
What period did the first prokaryotes appear?
In the Archean eon, precambrian era because the first prokaryote appeared around 3.5 billion years ago.
What is the order of the eras?
PRECAMBRIAN(Precambrian)FIRST INVERTEBRATES PALEOZOIC(Cambrian)FIRST FISHES(Ordovician)FIRST LAND PLANTS(Silurian)(Devonian)FIRST AMPHIBIANS.(Carboniferous,Mississippian,Pennsylvanian)FIRST REPTILES (Permian) MESOZOIC(Triassic)FIRST DINOSAURS, MAMMALS, and BIRDS. (Jurassic)(Cretaceous)END OF DINOSAURS CENOZOIC(Tertiary)BIRTH OF JESUS(Quaternary)DEATH OF JESUS
What period did the first birds arrive?
Dinosaurs first apeared in the triassic period
What period did the first birds appear?
In the beginning of the world they were flightiness.
What did jellyfish eat during the precambrian time period?
Jellyfish were not even alive during the Precambrian era because only single-celled organisms lived.
When did the first mollusk appear?
Well they appeared in the Precambrian Era, as bacteria. The Paleozoic, as trilobites, brachiopods and fish.
What time spans occurred first?
Precambrian
What time period did NASCAR begin?
First race was in 1948. First season was 1949.
