Description Scale bar equals 10 mm.
from 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, 149-155.GIF file - 77.06 kB - 557 x 229 pixelsadded on 2013-08-26118 viewsEchinoidea taxaTetragramma depressum Vaziri & Arab, 2013 †checked Kroh, Andreas 2013-08-26 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 License
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