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

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High resolution image	Sigillaria microrhombea var. nana; Sigillaria microrhombea var. acutissima; Sigillaria loricata var. Schlotheimi; Sigillaria loricata var. sub-Eugeni; Sigillaria exigua; Sigilliaria Branconis; Sigillaria parvula; Sigillaria major; Sigillaria subquadrata; Sigillaria Bismarckii; Sigillaria subcircularis High resolution image	High resolution image
Sigillaria bicuspidata; Sigillaria hexagonalis; Sigillaria ichthyolepis sp. var. vera; Sigillaria ichthyolepis var. Indensis; Sigillaria Bochumensis; Sigillaria squamata var. simplex; Sigillaria squamata var. repanda; Sigillaria squamata var. emarginata; Sigillaria squamata var. Brunnii; Sigillaria squamata var. acutilatera High resolution image	High resolution image	Sigillaria trapezoidalis var. acutangula; Sigillaria trapezoidalis var. obtusangula; Sigillaria fossorum var. mucronata; Sigillaria fossorum var. columbaria; Sigillaria fossorum var. subeccentra; Sigillaria fossorum var. Morandii; Sigillaria fossorum var. integerrima; Sigillaria fossorum var. elongata; Sigillaria fossorum var. obtusa; Sigillaria cumulata var. subfossorum; Sigillaria cumulata var. paucistriata; Sigillaria cumulata var. striata High resolution image