. haps one of the most interesting of the non-labyrinthodont forms was Diplocaulus (dip-lo-KAWL-us), belonging to a group known as the Nectridia. This was a peculi- arly flat, wide, water-living amphibian with an extraordinarily bizarre skull, shaped somewhat like a tremendously broad arrow- head. The ancestry of our modern amphibians, though obscured in the mists of geologic time, is probably dual in pattern. There is indication that the frogs and toads are de- scended from a labyrinthodont stem, while the salamanders and perhaps the coecilians are derived from certain small, salamander- like
. haps one of the most interesting of the non-labyrinthodont forms was Diplocaulus (dip-lo-KAWL-us), belonging to a group known as the Nectridia. This was a peculi- arly flat, wide, water-living amphibian with an extraordinarily bizarre skull, shaped somewhat like a tremendously broad arrow- head. The ancestry of our modern amphibians, though obscured in the mists of geologic time, is probably dual in pattern. There is indication that the frogs and toads are de- scended from a labyrinthodont stem, while the salamanders and perhaps the coecilians are derived from certain small, salamander- like amphibians of Pennsylvanian age known as lepospondyls (lep-o-spoN-dils). 44
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Keywords: ., bookcentury1900, bookpublishernewyork, booksubjectreptilesfossil
