Morphological variation in Hemigordius harltoni Cushman & Waters, 1928: Remarks on the taxonomy of Carboniferous and Permian hemigordiopsids

Date

2003-06-01

Author

Altıner, Demir
Ozkan-Altiner, S

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Nine morphotypes recognized within its population suggest that Hemigordius harltoni is a polytypic species. Narrowly discoidal to discoidal morphotypes are dominant in the population whereas lenticular ones are rare and sporadic. The degree of morphological variation in H. harltoni prompts us to question the validity of several previously named Carboniferous and Permian taxa. The definition of these taxa, generally based on few specimens, is far from being satisfactory to describe the intraspecific variability. Some named species are actually morphotypes belonging to highly variable species.

Subject Keywords

Hemigordius harltoni, Taxonomy, Polytypic species, Morphotype, Carboniferous, Permian

URI

https://hdl.handle.net/11511/34824

Journal

RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA

DOI

https://doi.org/10.3732/ajb.1500330

Collections

Department of Geological Engineering, Article

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Citation Formats

D. Altıner and S. Ozkan-Altiner, “Morphological variation in Hemigordius harltoni Cushman & Waters, 1928: Remarks on the taxonomy of Carboniferous and Permian hemigordiopsids,” RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA, pp. 195–211, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/34824.