The Mesoproterozoic Era is a geologic era that occurred between 1600 Ma and 1000 Ma (million years ago). Geology (from Greek γη gê, "earth" and λόγος Logos, "speech" lit Annum is one form of the Latin noun meaning Year, not a form normally used for derivatives in modern languages the accusative singular

The major events of this era are the formation of the Rodinia supercontinent, the breakup of the Columbia supercontinent, and the evolution of sexual reproduction. For the Genus of Metalmark butterflies, see Rodinia (butterfly. In Geology, a supercontinent is a Landmass comprising more than one Continental core or Craton. Columbia is the name of one of the Earth's oldest Supercontinents It was first proposed by J The Evolution of sexual reproduction is a major puzzle The first Fossilized evidence of sexually reproducing Organisms is from Eukaryotes of the Stenian

External links

• GeoWhen Database
• http://www.scielo.cl/scielo.php?pid=S0716-02082003000200007&script=sci_arttext Spanish article

Proterozoic eon
Paleoproterozoic era				Mesoproterozoic era			Neoproterozoic era
Siderian	Rhyacian	Orosirian	Statherian	Calymmian	Ectasian	Stenian	Tonian	Cryogenian	Ediacaran

The Proterozoic (ˌproʊtərəˈzoʊɪk is a geological eon representing a period before the first abundant complex life on Earth. The Paleoproterozoic (ˌpeɪlɪoʊˌproʊtərəˈzoʊɪk also spelled Palaeoproterozoic) is the first of the three sub-divisions ( eras) of the The Neoproterozoic Era is the unit of geologic time from 1000 to 542 +/- 0 The Siderian (saɪˈdɪəriən sideros meaning "iron" is the first Geologic period in the Paleoproterozoic Era and lasted from 2500 The Rhyacian (raɪˈeɪsiən Ρυαξ ( rhyax) meaning "stream of Lava " is the second Geologic period in the Paleoproterozoic The Orosirian (ˌɒroʊˈsɪəriən oroseira - ὀροσειρά, meaning "mountain range" is the third Geologic period in the The Statherian (stəˈθɪəriən statheros, meaning "stable firm" is the final Geologic period in the Paleoproterozoic Era The Calymmian (from Greek calymma, "cover" is the first Geologic period in the Mesoproterozoic Era and lasted The Ectasian (from Greek ectasis, "extension" is the second Geologic period in the Mesoproterozoic era and lasted The Stenian (from Greek stenos, "narrow" is the final Geologic period in the Mesoproterozoic Era and lasted The Tonian (from Greek tonas, "stretch" is the first Geologic period in the Neoproterozoic Era and lasted from The Cryogenian (from Greek cryos "cold" and genesis "birth" is a Geologic period that lasted from. The Ediacaran Period (ˌiːdiˈækərən named after the Ediacara Hills of South Australia) is the last geological period of the Neoproterozoic

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