Pygurus

Pygurus is a genus of sea urchins belonging to the family Clypeidae.

Pygurus Temporal range: Jurassic – Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N [1][2]
Fossil of Pygurus tenuis on display at Senckenberg Museum
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Subclass:	Euechinoidea
Infraclass:	Irregularia
Superorder:	Gnathostomata
Order:	Clypeasteroida
Family:	Clypeidae †
Genus:	Pygurus† Agassiz, 1839
Synonyms[3]
Kieripygurus Vadet, 1997 Pseudopygurus Lambert, 1911 Echinopygus d'Orbigny 1856[1]

Fossil record

This genus is known in the fossil record from the Jurassic (Bajocian age) to Cretaceous Santonian age) (age range: from about 164.7 to 94.3 million years ago). Fossils of species within this genus have been found in Egypt, France, Portugal, Saudi Arabia, Switzerland, Ukraine, the United Arab Emirates, Chile, Germany, India, Madagascar, Poland, Saudi Arabia, Tunisia and United States. [1][2]

Species

Species within this genus include: [1][4]

• Pygurus andinus Larrain and Biró-Bagóczky 1985
• Pygurus asiaticus Tokunaga 1903
• Pygurus complanatus Tanaka 1965
• Pygurus lampas de la Beche 1833
• Pygurus montmollini Agassiz 1836
• Pygurus noetlingi De Loriol 1899
• Pygurus tenuis Agassiz & Desor, 1847 [5]
• Pygurus yamamaensis Kier 1972

References

1. The Paleobiology Database
2. Sepkoski, Jack Sepkoski's Online Genus Database
3. Mineralienatlas - Fossilienatlas
4. Fossilworks
5. Fondation paleontologique jurassienne