Tetragramma

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

Species
Species include:


 * 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)