what other animals belong to the particular middle-period mentioned above?
Dinosaurs like cetiosaurs, brachiosaurs, megalosaurs and primitive ornithopods
Middle Jurassic
Many of the major groups of dinosaurs emerged during the Middle Jurassic, (including cetiosaurs, brachiosaurs, megalosaurs and primitive ornithopods).

Descendants of the therapsids, the cynodonts, were still flourishing along with the dinosaurs. These included the tritylodonts and mammals. 
what is ambondro mahabo? A mammal from the Middle Jurassic Isalo III Formation of Madagascar. who was the first to discover it? John Flynn
wiki:20935253
Middle Jurassic [SEP] Terrestrial life
Many of the major groups of dinosaurs emerged during the Middle Jurassic, (including cetiosaurs, brachiosaurs, megalosaurs and primitive ornithopods). Descendants of the therapsids, the cynodonts, were still flourishing along with the dinosaurs. These included the tritylodonts and mammals. Mammals remained quite small, but were diverse and numerous in faunas from around the world. Tritylodonts were larger, and also had an almost global distribution. The first crown-group mammals appeared in the Middle Jurassic. A group of cynodonts, the trithelodonts, were becoming rare and eventually became extinct at the end of this epoch.