Radiaspis

Radiaspis Temporal range: Upper Ordovician to Early Givetian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	† Artiopoda
Class:	† Trilobita
Order:	† Odontopleurida
Family:	† Odontopleuridae
Subfamily:	† Odontopleurinae
Genus:	† Radiaspis Richter and Richter 1917
Type species
Arges radiatus Goldfuss, 1843

Radiaspis is a genus of trilobite that lived from Late Ordovician through the Silurian to the mid-Devonian period. Fossils of Radiaspis have been found in present-day Europe, Australia, North Africa, and North America.

Fossil range

Radiaspis is a "generally rare" species found from the Ordovician to Devonian periods. Radiaspis fossils have been discovered in Australia, western Europe, North America, and Morocco. ^[1] Some of the earliest Radiaspis fossils – Radiaspis tuberata from Aragon – date from the early Late Ordovician, around 445 million years ago. Some of the youngest fossils date to around 386 million years ago, in the lower Givetian; ^[2] it is believed that the genus Radiaspis and several other trilobite genera became extinct at the time of the Taghanic event. ^[3]

Species

• Radiaspis comes(Basse, 1998) ^[4]
• Radiaspis radiataBruton, 1968 ^[5]
• Radiaspis taghonorumVan Viersen and Magrean 2019 ^[6]

Citations

1. van Viersen & Magrean 2019, p. 4.
2. Radiaspis, The Paleontology Database. Accessed 18 May 2025, Archived on 12 Aug 2024.
3. Feist & McNamara 2007, p. 778.
4. van Viersen & Magrean 2005, p. 89.
5. van Viersen & Magrean 2005, p. 90.
6. van Viersen & Magrean 2019, p. 5.

Bibliography

• Allart van Viersen and Benedict Magrean, 2019. "Radiaspis taghonorum sp. nov. (Trilobita, Odontopleuridae) from the Middle Devonian Hanonet Formation in Resteigne, southern Belgium": PDF. Published in Neues Jahrbuch für Geologie und Paläontologie – Abhandlungen volume 293, issue 3. doi:10.1127/njgpa/2019/0841.
• Allart van Viersen and Benedict Magrean, 2005. "A revision of Devonian trilobites from Belgium – Part 1: The genera Cornuproetus and Radiaspis: PDF. Published in Bulletin de l'Institut Royal des Sciences Naturelles de Belqique, Sciences de la Terre volume 75, by the Royal Belgian Institute of Natural Sciences.
• Raimund Feist and Kenneth J. McNamara, 2007. "Biodiversity, distribution and patterns of extinction of the last odontopleuroid trilobites during the Devonian (Givetian, Frasnian)": PDF. Published in Geological Magazine volume 144, issue 5, by Cambridge University Press. doi:10.1017/S0016756807003779; ISSN   1469-5081; CORE   28460018.