Plantae

Tettragonis Eichwald, 1840

Selection of related publications
Brummer, G. J. A. 1979. Palaeobiology of Tetragonis sulcata d'Eichwald, 1860, an Ordovician receptaculite in erratics from the northern Netherlands. Scripta Geologica 53, , 1-40.
Eichwald, E. 1861. Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii.