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When did the first insect appear?
Insects are one of the oldest groups of organisms, with fossil evidence suggesting they appeared around 400 million years ago during the Devonian period.
How old is ammonite fossil?
Ammonite fossils date back to the Mesozoic Era, with the oldest known species appearing around 400 million years ago. They thrived during the Jurassic and Cretaceous periods, becoming extinct about 66 million years ago at the end of the Cretaceous. Therefore, ammonite fossils can be anywhere from 66 million to over 400 million years old, depending on the specific species.
When was Arthur's Seat first eruption?
It is estimated to of been between 350 and 400 million years ago.
What is the age of phacops?
Phacops are extinct trilobites that lived during the Devonian period, approximately 400 to 350 million years ago.
How long ago do scientist think plants evolved stomata?
Scientists believe that plants evolved stomata around 400 million years ago during the Devonian period. Stomata are small pores on plant surfaces that help regulate gas exchange, allowing for photosynthesis and transpiration to occur.
How long have spiders been around for?
The main groups of spider developed about 200 million years ago, in the Triassic period. Spider-like arachnids are known from towards 400 million years ago, and some true spiders are known from about 300 million years ago in the Carboniferous period. The spiders are part of the Arthropod family, which dates back to the Cambrian era, 500 - 600 million years ago.
How many seconds are there in 400 million?
There are 400 million seconds in 400 million, as the question is essentially asking for a conversion of a quantity without any specific time unit. If you're referring to how many seconds are in 400 million seconds, the answer remains 400 million seconds. However, if you meant to convert 400 million seconds into years, it would be approximately 12.7 years.
Did turtles live 200-400 million years ago?
Only at the very end of that period. Turtles first appeared about 210 million years ago. There were no reptiles 400 million years ago.
How many years have sharks been around?
Sharks have been around for about 409 million years but before they evolved they were around for 890 million years.Sharks have been around for about 409 million years but before they evolved they were around for 890 million years. TRUE!Over 400 million years!Shakrs have been alive for a very long time. They have swam the waters of earth since about 409 million years ago. This period of time was before our first dinosaurs came to be infact.
How many years is 12.6 quadrillion seconds?
approximately 400 million years.
How long has sharks been on the earth?
around 400 million years
What are some landplants 400 million years ago?
There were many plants 400 million years ago. Many of them were very large compared to modern plants. There were trees, cactus, and ferns, to name a few.
Is a limestone bed containing fossils that are 550 million years old older than a bed of sandstone containing fossils that are 400 million years old?
550 million years old
How old is the ceolocanth?
Coelacanths are well known from the fossil record of 400 million to 75 million years ago.
How long have sharks been swimming in the ocean?
About 400 million years.
How long has wood been around for?
395 -400 million years ago
How old are the Dublin and Wicklow mountains?
Over 400 million years old.
