Karksiodus

Karksiodus; Temporal range: Givetian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Genus:	† Karksiodus
Species:	†K. mirus
Binomial name
	†Karksiodus mirus; Ivanov et al., 2011

Last updated January 31, 2026

Karksiodus is an extinct monotypic genus of cartilaginous fish that lived in what is now Estonia during the Givetian stage of the Middle Devonian epoch.

Etymology

The generic name Karksiodus references the Karksi locality, where the fossils of the genus were found, and the Greek word odus, meaning tooth. The specific epithet of the type and only species, Karksiodus mirus, is derived from the Latin word mirus, meaning extraordinary or astonishing.^[1]

References

↑ Ivanov, Alexander; Märss, Tiiu; Kleesment, Anne (19 February 2011). "A new elasmobranch Karksiodus mirus gen. et sp. nov. from the Burtnieki Regional Stage, Middle Devonian of Estonia; pp. 22–30". Estonian Journal of Earth Sciences. 60 (1): 22–30. doi:10.3176/earth.2011.1.02. ISSN 1736-4728 . Retrieved 31 January 2026– via Estonian Academy Publishers.

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[1] Ivanov, Alexander; Märss, Tiiu; Kleesment, Anne (19 February 2011). "A new elasmobranch Karksiodus mirus gen. et sp. nov. from the Burtnieki Regional Stage, Middle Devonian of Estonia; pp. 22–30". Estonian Journal of Earth Sciences. 60 (1): 22–30. doi:10.3176/earth.2011.1.02. ISSN 1736-4728 . Retrieved 31 January 2026– via Estonian Academy Publishers.

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