Diacalymene Explained

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

Distribution

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

Ordovician

• Cabano, Jupiter and White Head Formations, Quebec, Canada
• Ktaoua Formation, Morocco
• Dufton Shale, United Kingdom

Silurian

• Lipeón Formation, Argentina
• Cariy Sandstone, Paraguay
• Motol and Zelkovice Formations, Czech Republic
• Henryhouse Formation and St. Clair Limestone, United States

Notes and References

1. Book: Riccardo Levi-Setti . 1995 . Trilobites . 2nd . . 978-0-226-47452-6.
2. Pierre J. Lespérance . 1968 . Ordovician and Silurian trilobite faunas of the White Head Formation, Percé Region, Québec . . 42 . 3 . 811–826 . 1302377.
3. Jonathan M. Adrain and Gregory D. Edgecombe . 1997 . Silurian (Wenlock) calymenid trilobites from the Cape Phillips Formation, central Canadian Arctic . . 71 . 4 . 657–682 . 10.1017/S0022336000040130 . 1306585 . 1997JPal...71..657A . 131835921 .
4. http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=21537 Diacalymene