description Micragnostus Overview
Micragnostus is an extinct genus of small agnostid trilobites in the family Agnostidae, named by Howell in 1935 with Agnostus calvus as its type species. It is recorded from Upper Cambrian strata in regions including Wales, Scandinavia, Australia, East and South Asia, and parts of the Americas, and its broad distribution has made it useful in intercontinental correlation. A diagnostic feature is a transverse glabellar furrow positioned well in front of the glabellar node.
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What is Micragnostus?
Micragnostus is an extinct genus of small agnostid trilobites in the family Agnostidae. Howell named it in 1935, using Agnostus calvus as its type species.
When did Micragnostus live?
Micragnostus is recorded from Upper Cambrian strata. It therefore lived during the later part of the Cambrian Period.
Where have Micragnostus fossils been found?
Records include Wales, Scandinavia, Australia, East Asia, South Asia, and other regions. Its distribution reflects the broad spread of Cambrian marine environments.
What was the type species of Micragnostus?
The type species is Agnostus calvus. A type species is the reference species used to define and anchor the genus.
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