标签：#梯級角石科

梯級角石

{{Automatic Taxobox | taxon = Bathmoceras | authority = Barrande, 1865 | fossil_range = 奧陶紀 | type_species = Orthoceras complexum 物種 *Bathmoceras australe *Bathmoceras complexum *Bathmoceras llanvirnense *Bathmoceras nor…