A Marine Stem-Tetrapod from the Devonian of Western North America

Tinirau clackae material from Devonian Nevada is described and placed in a morphology matrix among stem tetrapodomorph fishes. This entity is a historical grade route: the named sample is not a direct ancestor, a monophyletic grade or a global first appearance.

Tinirau clackae from the upper Givetian Red Hill I beds supports a 387.7–382.7 Ma named-sample window inside the stem-tetrapodomorph route; it is not a direct ancestor or grade-wide range.