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Description: Kaibab chert forms as nodules within the Kaibab Formation limestones of the Colorado Plateau. The brown mottling in the material consists primarily of the silica skeletons of ancient sponges of the genus Actinocoelia.
- Author
- Michael Terlep/William Bryce, Northern Arizona University Anthropology Laboratories
- File
- kaibabchert.jpg
- File size
- 135 KB