Topic summary
Baltoniodus triangularis
Extracted from the Wikipedia article Baltoniodus.
Use in stratigraphy
The base of the Dapingian, the first stage of the Middle Ordovician, is defined as the first appearance of Baltoniodus triangularis.
Topic summary
Extracted from the Wikipedia article Baltoniodus.
The base of the Dapingian, the first stage of the Middle Ordovician, is defined as the first appearance of Baltoniodus triangularis.