Wikipedia
Dendrerpeton
Dendrerpeton is an extinct genus of temnospondyl amphibian from the Carboniferous of Nova Scotia. They are generally found associated with hollows of the Lepidodendron and Sigillaria tree genera, for which their fossils are contained within. These fossils are disarticulated and flattened providing poor specimens. In this species the stapes was used as a support structure for the ear than for hearing as in later tetrapods.
The specimens are generally 100 cm, large otic notch in the back of the skull.