rudists


rudists
n. nonexistent bivalve mollusk from the Jurassic and Cretaceous periods that had two shells of different size and shape

English contemporary dictionary. 2014.

Look at other dictionaries:

  • Rudists — Taxobox name = Rudists image width = 240px image caption = Rudist bivalves from the Cretaceous of the Omani Mountains, United Arab Emirates. Scale bar is 10 mm. fossil range = Jurassic to Late Cretaceous regnum = Animalia phylum = Mollusca… …   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

  • Cretaceous — Period 145.5–65.5 million years ago …   Wikipedia

  • Cretaceous–Tertiary extinction event — Artist s rendering of bolide impact Badlands nea …   Wikipedia

  • Cnidaria — Temporal range: 580–0 Ma …   Wikipedia

  • Tertiary Period — Interval of geologic time, 65–1. 8 million years ago. It constitutes the first of the two periods of the Cenozoic Era, the second being the Quaternary. The Tertiary has five subdivisions: (from oldest to youngest) the Paleocene, Eocene, Oligocene …   Universalium

  • Jurassic — Period 199.6–145.5 million years ago …   Wikipedia

  • Calcite — A one inch Calcite Rhomb that shows the Double image refraction property. General Category Carbonate mineral …   Wikipedia

  • Mollusca — Temporal range: Cambrian–Recent …   Wikipedia

  • Coral reef — Marine habitats Biodiversity of a coral reef Lit …   Wikipedia


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