Cenomanian Stage


Cenomanian Stage

      first of six main divisions (in ascending order) in the Upper Cretaceous Series, representing rocks deposited worldwide during the Cenomanian Age, which occurred 99.6 to 93.5 million years ago during the Cretaceous Period. Rocks of the Cenomanian Stage overlie those of the Albian Stage and underlie rocks of the Turonian Stage.

      The name for this stage is derived from Cenomanum, the Roman name for Le Mans in northwestern France. The Cenomanian has been divided into several biozones (biozone) representing shorter spans of time and characterized by fossil ammonite (ammonoid) genera that are used as index fossils (index fossil).

* * *


Universalium. 2010.

Look at other dictionaries:

  • Cenomanian — |The Cenomanian age (also known as Woodbinian [depreciated by the ICS] ) is the first or earliest or oldest Geochronological geologic age of the Late Cretaceous Epoch. Like all geological time units the Cenomanian age is associated with a… …   Wikipedia

  • Turonian Stage — ▪ geology       second of six main divisions (in ascending order) in the Upper Cretaceous Series, representing rocks deposited worldwide during the Turonian Age, which occurred 93.5 to 89.3 million years ago during the Cretaceous Period. Rocks of …   Universalium

  • Albian Stage — ▪ geology       uppermost of six main divisions of the Lower Cretaceous Series, representing rocks deposited worldwide during the Albian Age, which occurred between 112 million and 99.6 million years ago during the Cretaceous Period. Albian rocks …   Universalium

  • Oxfordian (stage) — System Series Stage Age (Ma) Cretaceous Lower Berriasian younger Jurassic Upper Tith …   Wikipedia

  • Cretaceous Period — Interval of geologic time from с 144 to 65 million years ago. During the Cretaceous the climate was warmer than today. In the seas, marine invertebrates flourished, and bony fishes evolved. On land, flowering plants arose, and insects, bees in… …   Universalium

  • angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

  • Point Stratotypique Mondial — Le Point Stratotypique Mondial (PSM) (Global Boundary Stratotype Section and Point, GSSP), définit les limites existantes entre deux étages géologiques, ne laissant pas la posssibilité de vide ou de chevauchement entre eux. Les PSM sont établie… …   Wikipédia en Français

  • Point stratotypique mondial — Le Point Stratotypique Mondial (PSM) (Global Boundary Stratotype Section and Point, GSSP), définit les limites existantes entre deux étages géologiques, ne laissant pas la possibilité de vide ou de chevauchement entre eux. Les PSM sont établis… …   Wikipédia en Français

  • Points Stratotypiques Mondiaux — Point stratotypique mondial Le Point Stratotypique Mondial (PSM) (Global Boundary Stratotype Section and Point, GSSP), définit les limites existantes entre deux étages géologiques, ne laissant pas la posssibilité de vide ou de chevauchement entre …   Wikipédia en Français

  • Carcharodontosaurus — Temporal range: Early–Late Cretaceous, 100–93 Ma …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.