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Tetragramma

From Wikipedia, the free encyclopedia

Tetragramma
Temporal range: Oxfordian–Turonian
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Order: Phymosomatoida
Family: Diplopodiidae
Genus: Tetragramma
L. Agassiz, 1838
Type species
Tetragramma variolare
(Brongniart, 1822)
Synonyms[1]
  • Acanthechinopsis Gregory, 1906

Tetragramma is a genus of fossil sea urchins known from the Upper Jurassic (Oxfordian) to the Upper Cretaceous (Turonian).[2]

Species

[edit]

Species include:[3]

References

[edit]
  1. Kroh A, Mooi R, eds. (2025). "Tetragramma L. Agassiz, 1838 †". World Echinoidea Database. World Register of Marine Species. Retrieved 30 May 2025.
  2. "Tetragramma Agassiz, 1838". The Echinoid Directory. Natural History Museum, London. Retrieved 2017-01-22.
  3. Kroh, A. (2010). Tetragramma L. Agassiz, 1838 †. In: Kroh, A. & Mooi, R. (2015) World Echinoidea Database. Accessed at http://www.marinespecies.org/Echinoidea/aphia.php?p=taxdetails&id=512465 on 2017-01-22
  4. 1 2 3 Vaziri, M. R.; Arab, A. L. (2013). "Echinoids of the genus Tetragramma Agassiz (Phymosomatoida) from the Aptian sediments of the Basab region, northwest of Kerman, Iran". Journal of Sciences, Islamic Republic of Iran. 24 (2): 149–155.
  5. Thompson, William R. (2016). Fossil Echinoids of Texas: A Monograph of Fossil Sea Urchins. River Stix. ISBN 978-1617042782.