References in periodicals archive ?
The diplodont, cladodont, phoebodont and protacrodont crown types appear in the elasmobranch dentitions in the Givetian.
Recently teeth of the oldest protacrodontid and cladodont (possibly symmoriid) chondrichthyans were discovered in the Late Givetian of the Kuznetsk Basin, western Siberia, Russia (Ivanov & Rodina 2007).
Cladodont and orodont-type shark teeth and ctenacanth shark fin spines indicate that more than one species of sharks were present as potential producers of the spiral cololite.