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brachiopod    音标拼音: [br'ekiəp,ɑd]
n. 腕足类动物的一种

腕足类动物的一种

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  • Brachiopod - Wikipedia
    Two major categories are traditionally recognized, articulate and inarticulate brachiopods The word "articulate" is used to describe the tooth-and-groove structures of the valve-hinge which is present in the articulate group, and absent from the inarticulate group
  • Brachiopods - Examples, Characteristics, Fossils, Pictures
    More than 12,000 fossil species have been recognized, with the earliest undisputed brachiopod dating back to the Early Cambrian Period It is believed that inarticulate brachiopods arose first, followed by articulate forms
  • Brachiopod - Simple English Wikipedia, the free encyclopedia
    Brachiopods are a phylum of small marine shellfish, sometimes called lampshells They are not common today, but in the Palaeozoic they were one of the most common types They lived near the shore (littoral zone), but now they have been pushed into deeper water by competition from bivalve molluscs
  • Brachiopods - British Geological Survey
    Brachiopods are virtually defenceless and their shell, enclosing the animal’s organs, is the only protection against predators Most are permanently attached by a fleshy stalk (the pedicle) to a hard, sea-floor surface and are incapable of actively pursuing food
  • What Are Brachiopods? Anatomy, Fossils, and Ecology
    Brachiopods are an ancient group, with a fossil record extending back to the Cambrian Period, over 500 million years ago Although less common today, their long history makes them fascinating subjects for understanding life’s evolution in the sea
  • Fossil Brachiopods - U. S. National Park Service
    Brachiopoda were a dominant group of marine organisms during the Paleozoic Their name comes from the Greek words brachion, meaning “arm,” and podos, meaning “foot ” This references to their internal anatomy Brachiopods were once thought to be mollusks, which have a muscular internal foot
  • Brachiopoda - Digital Atlas of Ancient Life
    Brachiopods are marine invertebrates, meaning they have no backbone, and are one of the few animal groups that live only in the ocean They live on the ocean bottom in a variety of places, including soft sediments, on rocks, reefs, or in rock crevices where some even anchor themselves with a muscular stalk called a pedicle
  • Brachiopods: Ancient Survivors Shed Light on Evolutionary Mysteries . . .
    Brachiopods are sessile marine invertebrates which have a bivalve shell and bear a number of ciliated tentacles around the mouth The shell resembles that of a bivalve mollusc but the structure of the body is quite different and the animals are placed in a separate phylum, the Brachiopoda
  • BRACHIOPOD Definition Meaning - Merriam-Webster
    The meaning of BRACHIOPOD is any of a phylum (Brachiopoda) of marine invertebrates with bivalve shells within which is a pair of arms bearing tentacles by which a current of water is made to bring microscopic food to the mouth —called also lampshell
  • Brachiopod - an overview | ScienceDirect Topics
    Brachiopods are defined as a diverse group of marine, mainly sessile, benthic invertebrates characterized by two shells or valves, a ciliated feeding organ known as the lophophore, and a fleshy attachment stalk or pedicle They have a long geological history, with over 12,000 fossil species and approximately 350 living species





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