<nowiki>Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; Olcostephanus; 沟冠菊石属; Gattung der Familie Olcostephanidae; род мекотели; genus of molluscs (fossil); جنس من الرخويات (أحفوريات); рід викопних молюсків; xéneru estinguíu de moluscos</nowiki>
Olcostephanidae - Olcostephanus astierianus cropped.jpg 1,557 × 1,257; 292 KB
Olcostephanidae - Olcostephanus astierianus.JPG 1,752 × 1,754; 1.81 MB
Olcostephanus portlandicus.jpg 2,670 × 2,794; 2.74 MB
_asterianus_(d%27Orbigny)_Lower_Hauterivian,_Komshtitsa,_Sofia_Province,_Cr1_946X1_at_the_Sofia_University_%27St._Kliment_Ohridski%27_Museum_of_Paleontology_and_Historical_Geology.jpg)
_jeannoti_(d%27_Orbigny)_Lower_Hauterivian,_Palilula,_Montana_Province,_Cr1_950X1_at_the_Sofia_University_%27St._Kliment_Ohridski%27_Museum_of_Paleontology_and_Historical_Geology.jpg)
_catuloi_(Rodighiero)_Lower_Hauterivian,_Komshtitsa,_Sofia_Province,_Cr1_949_at_the_Sofia_University_%27St._Kliment_Ohridski%27_Museum_of_Paleontology_and_Historical_Geology.jpg)
_Sayni_(Kilian)_Lower_Hauterivian,_Krapchene,_Montana_Province,_Cr1_948X1_(Coll._G._Mandov)_at_the_Sofia_University_%27St._Kliment_Ohridski%27_Museum_of_Paleontology_and_Historical_Geology.jpg)