Extinct genus of trilobites
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Aayemenaytcheia paragranulata is a Middle Devonian proetid trilobite.
Etymology.
The genus name is the vocalisation of the acronym AMNH of the American Museum of Natural History and the suffix -ia (Aay-Em-En-Aytche-ia), as gratitude for funding Lieberman's research.
The species epithet "paragranulata" refers to the fact that the species was first regarded as closely related to "Dechenella granulata".
Distribution.
"A. paragranulata" has been collected from the Devonian of Canada (Emsian and Eifelian, Blue Fjord Formation, Bathurst Island, Nunavut).
Taxonomy.
"Aayemenaytcheia paragranulata" was originally described as a species belonging to the genus "Dechenella". Recent cladistic analysis however makes it likely the species is in fact the earliest branch of a clade that further includes "Lacunoporaspis", "Dechenella," "Schizoproetus" and "Schizoproetoides". So in order to retain the monophyly of the genus "Dechenella", a new genus was erected for "D. paragranulata".
References.
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