Die Sigillarien der preussischen Steinkohlengebiete. I. Die Gruppe der Favularien (1887)

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Sigillaria campanulopsis var. subrugosa; Sigillaria campanulopsis var. barbarta; Sigillaria amphora; Sigillaria Werdensis; Sigillaria rhenana var. signata; Sigillaria rhenana var. eccentra; Sigillaria rhenana var. prominula; Sigillaria rhenana var sublaevis; Sigillaria rhenana var varians; Sigillaria rhenana var Grebei High resolution image	High resolution image	Sigillaria elegantula var. regularis; Sigillaria elegantula var. subregularis; Sigillaria elegantula var imperfecta; Sigillaria elegantula var. emarginata; Sigillaria bicostata var. integra; Sigillaria bicostata var. emarginata; Sigillaria Hauchecornei var. laevicostata; Sigillaria Hauchecornei var. rugulosocostata High resolution image
High resolution image	Sigillaria regia; Sigillaria barbata var. fracta; Sigillaria barbata var. subrecta; Sigillaria barbarta var. minor; Sigillaria subtricostulata; Sigillaria subcontigua; Sigillaria acarifera; Sigillaria cancriformis var. Paulina; Sigillaria cancriformis var. silesiaca; Sigillaria cancriformis var. polonica High resolution image	High resolution image