Bibliographic references: An Early Permian flora with Late Permian and Mesozoic affinities from North-Central Texasin which chronostratigraphic unit is the base: KungurianContaining Unit: Pease River Grouprank: Formation status: regionalin which chronostratigraphic unit is the top: Wordian Add new comment You must have JavaScript enabled to use this form. Your name Subject Comment * More information about text formats CAPTCHAThis question is for testing whether or not you are a human visitor and to prevent automated spam submissions. What code is in the image? * Enter the characters shown in the image.
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