30 Mededeelingen van ’s Rijks Herbarium Leiden: 
C. suckowi Kutorga, Verh. k. Russ. min. Ges. St. Petersburg, 1842, 
PIE Indeterminable, 
C. suckowi Geinitz, Sachsen, 1855, PI. 18, fig. 4. 
C. undulatus Sternb. 
C. suckowi Phillips, Manual Geology, 1855, fig. 112. 
Indeterminable. 
C. suckowi Goeppert, Palaeontogr., XII, 1864—65, Pl. 1, fig. 3. 
? C. gigas Bgt. 
C. suckowi Goeppert, Palaeontogr., XII, 1864—65, PL. 1, fig. 4. 
Indeterminable. 
C. suckowi Heer, Urwelt d. Schweiz, 1865, fig. 5b. 
Indeterminable. 
C. suckowi Dawson, Acad. Geology, 1868, fig. 165 A, Aj, Az. 
Indeterminable. 
C. suckowi Roehl, Palaeontogr., XVIII, 1868, PL. 2, fig. 2. 
Doubtful. 
C. suckowi Schimper, Traité, 1, 1869, Pl. 18, fig. 1. 
C. ef. infractus Gutb. 
C. suckowi Heer, Monde primitif, 1872, fig. 5b. 
Indeterminable. 
C. suckowi Balfour, Palaeont. Botany, 1872, fig. 454. 
Indeterminable. 
C. suckowi Heer, Primaeval world, IL, 1876, fig. 5b. 
Indeterminable. 
C. suckowi Grand’ Eury, Loire, 1877, PL. 1, fig. 4, 5, 6. 
Indeterminable. 
C. suckowi Heer, Urwelt d. Schweiz, 2. Aufl, 1879, fig. 175. 
Indeterminable. 
0. suckowi Lesq., Coalflora, 1, 1879—80, PL. 1, fig. 4. 
Indeterminable. 
C. suckowi Dawson, Chain of Life, fig. 96a. Indeterminable. 
C. suckowi Achepohl, Niederrh. Westf. Steink., 1881, PL 1, fig. 12; 
Pl. 16, fig. 5; Pl. 24, fig. 3. ? C. undulatus Sternb. 
C. suckowi Achepohl, Niederrh. Westf. Steink., 1881, PL. 20, fig. 6; 
1882, Erg. Bl. 1, fig. 16. Indeterminable. 
C. suckowi Renault, Cours, Il, 1882, fie. 4, 6. Indeterminable. 
C. suckowi Twelvetrees, Q. J. G. S., XXXVIIL, 1882, Pl. 20, fig. 3. 
Indeterminable. 
C. suckowi Weiss, Steink. Calam., II, 1884, Pl. 17, fig. 4, Textlig. 
on p. 135. C. undulatus Sternb. 
C. suckowi Stur, Calam. Schatzl. Sch., 1887, Pl. 14, fig. 1; ? PL 4, 
fig. 3. C. undulatus Sternb. 
