Ampyx (trilobite) - AbsoluteAstronomy.com

Ampyx is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

of Asaphid

Asaphida

Asaphida is a large, morphologically diverse order of trilobite found in strata dated from the Middle Cambrian to the Silurian. The order contains six superfamilies , but no suborders...

Ordovician

The Ordovician is a geologic period and system, the second of six of the Paleozoic Era, and covers the time between 488.3±1.7 to 443.7±1.5 million years ago . It follows the Cambrian Period and is followed by the Silurian Period...

-Silurian

Silurian

The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 ± 1.5 Mya , to the beginning of the Devonian Period, about 416.0 ± 2.8 Mya . As with other geologic periods, the rock beds that define the period's start and end are well identified, but the...

trilobites

Trilobite

Trilobites are a well-known fossil group of extinct marine arthropods that form the class Trilobita. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period , and they flourished throughout the lower Paleozoic era before...

. They are characterized by three extended spines on the head-shield. Species include Ampyx linleyensis (Lanvirn-Caradoc

Caradoc Series

In geology, Caradoc Series is the name introduced by Roderick Murchison in 1839 for the sandstone series of Caer Caradoc in Shropshire, England. It is the fifth of the six subdivisions of the Ordovician System, comprising all those rocks deposited worldwide during the Caradocian Age .The limits of...

series).

Ampyx grew to a length of 1.5 inches (4 centimeters) and fed on small edible particles in the water.

The source of this article is wikipedia, the free encyclopedia. The text of this article is licensed under the GFDL.