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During the period of 200-400 million years ago, various sea creatures thrived, including early fish like jawless agnatha and primitive jawed fish such as placoderms. The oceans were also home to diverse invertebrates like trilobites, crinoids, and mollusks. Additionally, early marine reptiles and coral reefs began to emerge during this time, contributing to the complexity of ancient marine ecosystems.
What else can I help you with?
Dinoursaurs lived on earth for approximately how many years?
I think they lived (the dinosaurs) for approximately 165 million years.
What are some prehistoric creatures that lived in Alaska?
Some prehistoric creatures that lived in Alaska include woolly mammoths, mastodons, sabertooth cats, short-faced bears, and giant ground sloths. These creatures roamed the region during the Pleistocene epoch around 2.6 million to 11,700 years ago.
The earliest primate identifiable from the fossil record is?
The earliest primate identifiable from the fossil record is believed to be a group of creatures called Plesiadapiforms. These small mammals lived around 65 million years ago and are thought to be ancestral to modern primates.
Why is there a gap in hominids between 3 mill BCE and 2 mill BCE?
AnswerThere may once have been a total gap in our knowledge of those hominids who lived between 3 and 2 million years ago, but this is no longer the case.From the fossil record, AustraIopithecus afarensis is now known to have lived between 4 and 2.5 million years ago.Australopithecus africanus lived between 3 and 1 million years ago.Australopithecus robustus is now known to have lived between 2.5 and 1.5 million years ago.Australopithecus boisei lived between 2.5 and 1 million years ago.Homo habilis also lived between 2.5 and 1.5 million years ago.No doubt, further discoveries will continue to fill out this picture, but there is already a wealth of information about the early hominids who lived between 3 and 2 million years ago.
Why would you not find trachodon with wooley mammoth fossils?
Trachodon and woolly mammoths lived in different time periods. Trachodon, a type of dinosaur, lived during the Late Cretaceous period around 70 million years ago, while woolly mammoths lived during the Pleistocene epoch around 2 million years ago. Their existence did not overlap, so their fossils would not be found together.
Earliest humanlike creatures that lived in Africa three to four million years ago were?
buttholes
Were we monkeys before we became human?
Not directly; Humans evolved from an ape-like ancestor who lived around 7 million years ago. These ape-like creatures shared a common ancestor with monkeys who lived around 20 to 30 million years ago.
How long have sea turtles lived?
Sea turtles are creatures that have been around for over 60 million years, in one form or another.
How old are you when you have lived for a million years?
One million years.
How many years old is a person who has lived for a million years?
A person who has lived for a million years would be a million years old.
What piranha lived 2 million years ago?
none lived 2 million years ago
How many years paranthropus live?
They lived from 2.0 million years ago to 1.2 million years ago.
When did the Hypsilophodontids live?
Hypsilophodontids are believed to have lived between 176 and 66 million years ago These quick, herbivorous creatures were about 1-2 meters long.
What were the only flying creatures 200 million years ago?
200 million years ago the only creatures capable of powered flight were insects and pterosaurs.
Dinosaurs lived 230 million years ago during what era?
The dinosaurs, those giant lizard creatures, dominated the face of Earth for about 165 million years. This period of time is called Mesozoic Era, and during this time the planet suffered several violent changes.
Who lived on earth millons of years ago?
dinosaurs and other creatures like dinosaurs lived on the millions of years ago
What is the total amount of time that the dinosaurs lived on earth?
the dinosaurs lived from 250 million years ago to 65 million years ago.
