20318 - Nice Polished 4.93 Inch Mammites nodosoides (Ammonite) Upper Cretaceous Turonian Quartz not filled
Yard notes & kiln story
Description
not filled
Iberocoryphe
This variety of quarz is called chalcedony
In order to classify them it would be necessary to cut off a section for analysis
the teeth that are extracted from the depth of the mines are usually much better preserved
20318 - Nice Polished 4.93 Inch Mammites nodosoides (Ammonite) Upper Cretaceous Turonian Quartz not filledMammites nodosoides, Schlter 1871 (ammonite) Cephalopoda Ammonitida Acanthoceratidae Huge specimen. This ammonite species is a biostratigraphic marker of the Turonian stage (Upper Cretaceous). It appears in the Akrabou formation, usually in nodules. Polished specimen.