The Mammals of the Late Eocene - Early Oligocene Solent Group. Part 2, Euarchonta (Nyctitheriidae and Primates), Lipotyphla, Chiroptera, Pseudorhyncocyonidae, Pantolesta, Apatotheria

In part 2, the description of Nyctitheriidae is completed with newly found postcranial bones. These include pisiform, magnum, unciform, entocuneiform and first metatarsal. The last two demonstrate a degree of hindfoot grasping in subfamily Amphidozotheriinae. Specimens previously attributed to the adapid primate Leptadapis magnus are referred to an undetermined species of the genus Magnadapis. The adapid Leptadapis stintoni is returned to the genus Adapis and its upper dentition described. Postcranial bones of the omomyid primate Pseudoloris are described for the first time. New associated postcranial bones of the omomyid Microchoerus erinaceus are described, with interpretation of hindfoot adaptations. New criteria are developed for distinguishing species of Microchoerus. A new subspecies, Microchoerus erinaceus duplex is named for assemblages, which contain some individuals that show more complex dental morphology. Stratigraphic range extensions are recorded for the species M. erinaceus, M. creechbarrowensis, M. wardorum (as cf.), M. ornatus and Gesneropithex figularis (as cf.). A phylogenetic analysis conducted on the Necrolemur-Microchoerus clade shows the genus Microchoerus to be monophyletic. The humerus of the mole Eotalpa and postcranial bones of the amphilemurid Gesneropithex are described for the first time. The newly discovered first upper incisor of Butselia supports its recently proposed close relationship with Solenodon. The genus Dyspterna and the species Euhookeria hopwoodi are returned to the pantolestan genus Cryptopithecus. Two new apatotherian species, Heterohyus crayi and H. estesi, are described. The species H. nanus, as commonly recognized, is found to consist of two species, H. nanus and H. morinionensis. Dental occlusion in the family Apatemyidae is described for the first time. A phylogenetic analysis conducted on the genus Heterohyus shows it to be composed of two distinct clades. A correction is made to the stratigraphy of the locality of North-east Headon Hill.