Diacalymene

Diacalymene; Temporal range: Late Ordovician-Silurian; ~445.6–418.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	†Trilobita
Order:	†Phacopida
Suborder:	†Calymenina
Family:	†Calymenidae
Genus:	†Diacalymene; Kegel, 1927
Type species
	Calymene diademata; Barrande, 1846

Diacalymene is a genus of trilobite from the order Phacopida, suborder Calymenina. It includes the species D. ouzregui, D. clavicula,^[2] D. diademata and D. gabrielsi.^[1] It lived in the Ordovician^[3] and Silurian periods.^[1]

Distribution

Fossils of the genus have been found in:^[4]

Ordovician

Cabano, Jupiter and White Head Formations, Quebec, Canada
Dufton Shale, United Kingdom

Silurian

References

^ ^a ^b ^c Jonathan M. Adrain and Gregory D. Edgecombe (1997). "Silurian (Wenlock) calymenid trilobites from the Cape Phillips Formation, central Canadian Arctic" (PDF). Journal of Paleontology. 71 (4): 657–682. JSTOR 1306585.
^ Riccardo Levi-Setti (1995). Trilobites (2nd ed.). University of Chicago Press. ISBN 978-0-226-47452-6.
^ Pierre J. Lespérance (1968). "Ordovician and Silurian trilobite faunas of the White Head Formation, Percé Region, Québec". Journal of Paleontology. 42 (3): 811–826. JSTOR 1302377.
^ Diacalymene at Fossilworks.org

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[Adrain-1] Jonathan M. Adrain and Gregory D. Edgecombe (1997). "Silurian (Wenlock) calymenid trilobites from the Cape Phillips Formation, central Canadian Arctic" (PDF). Journal of Paleontology. 71 (4): 657–682. JSTOR 1306585.

[2] Riccardo Levi-Setti (1995). Trilobites (2nd ed.). University of Chicago Press. ISBN 978-0-226-47452-6.

[3] Pierre J. Lespérance (1968). "Ordovician and Silurian trilobite faunas of the White Head Formation, Percé Region, Québec". Journal of Paleontology. 42 (3): 811–826. JSTOR 1302377.

[FWDiacalymene-4] Diacalymene at Fossilworks.org

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