CRINOIDS Meaning and
Definition
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Crinoids are marine animals belonging to the class Crinoidea, which are characterized by their branching and feathery arms that resemble the petals of flowers. They are also often referred to as sea lilies or feather stars. These fascinating organisms can be found in oceans worldwide, particularly in shallow waters, where they attach themselves to substrates such as rocks, corals, or even the ocean floor.
Crinoids have a unique body structure, consisting of a central body called the calyx, which houses the vital organs, including the mouth and digestive system. From the calyx, numerous arms extend outward, forming an intricate network of specialized appendages. These arms are covered with tiny tube feet that are used for locomotion and capturing food.
They are filter feeders, obtaining sustenance by extracting organic particles, plankton, and other small organisms from the water using their feathery arms. Crinoids have a tube-like structure called the stalk, which anchors them to the substrate, allowing them to sway and move with the water currents.
These ancient creatures have fossil records that date back as far as the Paleozoic era, over 300 million years ago. They have evolved and adapted to various environmental conditions, particularly during the Mesozoic and Cenozoic eras. Today, crinoids play a significant role in marine ecosystems, providing habitat and food sources for other organisms.
Crinoids have captivated scientists and enthusiasts alike due to their mesmerizing appearance and evolutionary significance. Their delicate and intricate structures have made them popular subjects for biological research, as they offer insights into the evolutionary history of marine life.
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In geol., the encrinites, an extensive order, chiefly of fossil echinoderms, so termed from the resemblance which they have to a lily; stone lilies.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for CRINOIDS
Etymology of CRINOIDS
The word "crinoids" has its etymology rooted in Latin and Greek.
The term "crinoids" comes from the Latin word "crinis", meaning "hair", and the Greek suffix "-oid", which signifies resemblance. "Crinis" refers to the hair-like appearance of the arms or appendages of these marine animals, which are often referred to as "feathers".
Crinoids belong to the phylum Echinodermata and are commonly known as sea lilies or feather stars. The name "crinoids" accurately describes their appearance, as they possess long, slender, and branching arms covered in tiny hair-like structures known as pinnules.
Similar spelling words for CRINOIDS
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