Tetragramma

Tetragramma — Yura davrining oxiri (Oxford bosqichi)dan Boʻr davrining oʻrtalarigacha (Turon bosqichi) yashagan qazilma dengiz kirpisi jinsidir.

 Turlari 
Quyidagi turlar mavjudKroh, A. (2010). Tetragramma L. Agassiz, 1838 †. In: Kroh, A. & Mooi, R. (2015) World Echinoidea Database. Manba: http://www.marinespecies.org/Echinoidea/aphia.php?p=taxdetails&id=512465, 2017-01-22 sanasida olindi.:
 Tetragramma antsingyensis Lambert, 1936
 Tetragramma basabensis Vaziri & Arab, 2013
 Tetragramma besairiei Lambert, 1933
 Tetragramma bosei Jones, 1938
 Tetragramma cornueli Corroy, 1925
 Tetragramma depressum Vaziri & Arab, 2013
 Tetragramma donaldtrumpi Thompson, 2016
 Tetragramma giganteum Lambert, 1935
 Tetragramma hourcqi Collignon, 1950
 Tetragramma pomeraniae Kongiel, 1957
 Tetragramma tafermense Lambert, 1931
 Tetragramma tetratuberculatus Vaziri & Arab, 2013
 Tetragramma variolare (Brongniart, 1822)

 Manbalar