TETRASTER Meaning and
Definition
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Tetraster is a noun that refers to a type of fossilized starfish. It is also known by its scientific name tetrasteromorphs. Tetraster is made up of the prefix "tetra-" which means four and the word "aster" which means star. This fossilized remains of extinct starfish are typically found in marine sediments and are characterized by their distinctive four-armed star shape.
Tetraster is often described as a unique and enigmatic creature that lived during the Paleozoic era, specifically during the Ordovician and Silurian periods, approximately 485 to 443 million years ago. These fossils are identified by their intricate and well-preserved skeletal structures, featuring four long, slender, and often bifurcated arms radiating from a central disc or body.
The tetraster exhibits a remarkable level of symmetry and its skeleton can offer important insights into the anatomy and evolutionary history of ancient echinoderms. They were likely members of the class Stelleroidea, which includes starfish and their relatives.
Studying tetraster fossils allows paleontologists to understand the biodiversity and ecological dynamics of ancient marine ecosystems. By analyzing these fossils, scientists gain valuable information about the evolution, behavior, and paleoecology of this extinct group of sea-dwelling organisms. The fossil record of tetraster provides a window into Earth's past and helps paint a more complete picture of life's history.
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A figure exceptionally and abnormally occurring in mitosis, in which there are four asters.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for TETRASTER
- retraster
- fetraster
- getraster
- yetraster
- 6etraster
- 5etraster
- twtraster
- tstraster
- tdtraster
- trtraster
- t4traster
- t3traster
- terraster
- tefraster
- tegraster
- teyraster
- te6raster
- te5raster
- teteaster
- tetdaster
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