Please help find a short story that deals with the following: Human time travellers go back to the time of the dinosaurs. I cannot remember if they encounter intelligent dinosaurs, but they do meet up with animals that have evolved intelligence throughout Earth's history (e.g. felines, some kind of quadruped~herbivore, amphibians). They are all surprised to encounter one another, thinking themselves the only intelligent species to have evolved on Earth because they existed for about 5~8 million years, and then were utterly obliterated from the fossil record by their own wars and the forces of time, until the next civilization arose about 10 million years later. I thought it might be "Wings of a Bat" by Ashwell, but cannot confirm this.
I thought this story may be part of the Robert Silverberg, Martin Harry Greenberg & Charles G. Waugh anthology "Science Fictional Dinosaur" (1982), but unsure.