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Total: 132

genus valid

Genus Protamyris Unger Gen. Sp. Pl. Foss. 476. 18 Apr 1850

genus valid

Genus Pterodictyon Unger in R. Richter, Unger Denkschr. Kaiserl. Akad. Wiss. Wien, Math.-Naturwiss. Kl., 11(Abtheilung 1): 172. 25 Jun 1856

genus unavailable

Genus Pterodictyum Unger in Bronn Neues Jahrb. Mineral. Geognosie, 1856, (5): 626. 1856

genus valid

Genus Quercinium Unger in Endl. Gen. Pl., Supplement 2: 101. Mar - Jun 1842

non-fossil genus valid

Genus Ramularia Unger 119.

genus valid

Genus Rhoidium Unger Gen. Sp. Pl. Foss. 475. 18 Apr 1850

genus unavailable

Genus Roemeria Unger in F. Roem. Kreidebild. Texas 95. 16-18 Oct 1852

genus valid

Genus Rosthornia Unger in Endl. Gen. Pl., Supplement 2: 101. Mar - Jun 1842

genus valid

Genus Salicinium Unger Gen. Sp. Pl. Foss. 420. 18 Apr 1850

genus unavailable

Genus Schizoxylon Unger in R. Richter, Unger Denkschr. Kaiserl. Akad. Wiss. Wien, Math.-Naturwiss. Kl., 11(Abtheilung 1): 180. 25 Jun 1856