Tetragramma

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
  • Acanthechinopsis Gregory, 1906

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

Species

Species include:

References

  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.


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