Oip

Living Fossils (million years ago)

By Elisa_bete
  • Period: 4600 BCE to 2500 BCE

    Archean Eon

    This is time when the first single celled organisms originated. For example: bacteria.
  • Period: 2500 BCE to 539 BCE

    Proterozoic Eon

    It means "before animal life". Basically, there were existed: bacterias, algae and worm-like creatures.
  • Period: 544 BCE to

    Phanerozoic Eon

    Most of the major groups of animals first appear in the fossil record and continues through today.
  • 541 BCE

    Cyanobacteria

    Cyanobacteria
  • Period: 541 BCE to 252 BCE

    Paleozoic era

    "Ancient life"
    The livings at that time were relatives of the sponge and trilobites.
  • Period: 541 BCE to 485 BCE

    Cambrian period

    Most of the major groups of animals first appear in the fossil record.
  • 539 BCE

    Charnia

    Charnia
  • Period: 488 BCE to 443 BCE

    Ordovician period

    During this period, there were various marine invertebrates and conodonts (early vertebrates).
  • 485 BCE

    Helicoplacus

    Helicoplacus
  • Period: 444 BCE to 419 BCE

    Silurian period

    Period of coral reef. Including relatives of spiders and centipedes...
  • 443 BCE

    Cephalopods

    Cephalopods
  • 419 BCE

    Sponges

    Sponges
  • Period: 419 BCE to 359 BCE

    Devonian period

    Ferns, horsetails and seed plants had appeared. Therefore, tehy have formed forests.
  • Period: 360 BCE to 299 BCE

    Carboniferous period

    It is characterized of the amniote egg (which allowed the ancestors of birds, mammals, reptiles to reproduce). And also by the increased in large insects and tree ferns.
  • 359 BCE

    Mammals

    Mammals
  • 359 BCE

    Placoderms

    Placoderms
  • 299 BCE

    Tree fern

    Tree fern
  • Period: 299 BCE to 252 BCE

    Permian period

    During this period, the land continents came together to form Pangaea. This period had a great variety of species.
  • 252 BCE

    Trilobite

    Trilobite
  • Period: 252 BCE to 66 BCE

    Mesozoic era

    "Middle life"
    There were dinosaurs, cycads and ferns.
  • Period: 252 BCE to 201 BCE

    Triassic period

    There were no polar ice caps, and the climate at the equator was hot and dry, punctuated by violent monsoons.
  • 251 BCE

    Seymouria

    Seymouria
  • 201 BCE

    Ammonite

    Ammonite
  • Period: 201 BCE to 56 BCE

    Jurassic period

    During this time dinosaurs roamed the Earth and there were various plants like cycads, growth of ferns... And also there were marine species: fish, squid and coiled ammonites.
  • 156 BCE

    Diplodocus

    Diplodocus
  • Period: 145 BCE to 66 BCE

    Cretaceous period

    The first ceratopsiand and pachycelhalosaurid dinosaurs appeared. And were found many fossils of many species of this period.
  • 66 BCE

    Dinosaurs

    Dinosaurs
  • 66 BCE

    Megaloceros

    Megaloceros
  • 66 BCE

    Plesiosaurs

    Plesiosaurs
  • Period: 66 BCE to

    Cenozoic era

    "Recent life"
    There were living mammals, birds, flowering plants and ray-finnes fishes.
  • Period: 66 BCE to 2 BCE

    Tertiary period

    This period suffered a big extinction, due to biological changes. Although, there were quite amount of plants, grasslands, insects, teleost fish, birds, and also mammals.
  • 2 BCE

    Teleost fish

    Teleost fish
  • 2 BCE

    Humans

    Humans
  • Period: 2 BCE to

    Quaternary period

    Mammoths and mastodons, sabre-toothed cats, giant ground sloths, and many other large mammals roamed North America, Asia, and Europe. In this period, ocurred human civilization. Humans still exist today.