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Table 6
Stratigraphic distribution of relevant vertebrate taxa in the Chickasha formation. None of the taxa shown here extend beyond the Changhsingian.
| Geological timescale | Taxa | ||||||
|---|---|---|---|---|---|---|---|
| Series | Stages | Dissorophidae | Diplocaulus + Diploceraspis | Moradisaurini | Macroleter | Caseinae | Varanopidae |
| Lopingian | Changhsingian | ? | X | ||||
| Wuchiapingian | ? | X | |||||
| Guadalupian | Capitanian | X | X | ||||
| Wordian | X | X | X | ||||
| Roadian | X | Ch | Ch | X | X | Ch | |
| Cisuralian | Kungurian | X | X | X | X | ||
| Artinskian | X | X | X | ||||
| Sakmarian | X | X | X | ||||
| Asselian | X | X | X | ||||
| Pennsylvanian | Gzhelian | X | X | X | |||
| Kasimovian | X | X | |||||
| Moscovian | X | X | |||||
Abbreviations: Ch: present in the Chickasha (and also, in some cases, in the San Angelo); ?: presence suggested by some studies but based upon fragmentary material of uncertain attribution or material from inadequately dated rocks.
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