Our Timeline

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Our Timeline
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PRECAMBRIAN TIME
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First Life

• Since the Precambrian time was the first time
  period that we know of. It was filled with life
  forms that started the life cycle. There were
  trilobite, jellyfish, stromatolites, archea, and
  many types of mammals that no one has seen before.

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Atmosphere

• During this time period there was very little
  oxygen. The atmosphere was made up methane,
  ammonia, hydrogen carbon monoxide, and other
  deadly gasses.

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Continents

• There were not really any continents but there
  was one that had all of them put together this
  super continent called Pangea.

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Carboniferous Plant Life

• On land, especially in the Euramerican part of
  Pangea, the equatorial regions are covered by
  forests. The moist tropical climate produces a
  lush plant growth, which eventually becomes the
  great Coal Deposits (hence the name Carboniferous
  - "coal bearing").
• The fern-like but seed-bearing pteridosperms, the
  huge green-stemmed Lepidodendrale lycopods
• The giant sphenopsid Calamites (20 meters in
  height),
• The strap-leaved mangrove-rooted Cordaitales
  (Cordaites, up to 45 meters) are all abundant,
  and tied closely to water.
• Horsetails

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Climate/ Weather
In the Carboniferous period, the continents start
to separate. The two super continents Gondwana
and Laurentia finally crash into each other
somewhere over the equator, forming one gigantic
land mass called Pangaea. This creates the
Appalachian mountain range in what will be North
America. The atmosphere is mostly nitrogen and
oxygen. The weather is pleasantly warm. It was
also tropical and humid all year round, even in
the winter.
Carboniferous
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Carboniferous Animal Life

• The sea life included
• Sea scorpions
• Bryozoans
• Foraminifers
• Brachiopods
• Some of the life forms may include
• Snails
• Centipedes
• Scorpions
• Lots of kinds of cockroach increase on the land.