Four species of mylagaulid rodents are described from the Tesuque Formation, Espanola Basin of New Mexico: Alphagaulus vetus (Matthew, 1924), Ceratogaulus robustus, new species, Notogaulus minor, new genus and species, and Notogauhis major, new species. Ceratogaulus robustus is distinguished from other species of the genus by its much heavier dentary and relatively wider premolar. Notogaulus is separable from other mylagaulines in its unique features of its cranium (ovate rugose areas on the nasals; shape, thickness, and porosity of bone on the postorbital processes), and relatively primitive dental morphology (no preferred separation of the branches of the parafossette on P4). The recognition of a distinct genus of mylagaulid from New Mexico demonstrates that by the middle Miocene (Barstovian) derived mylagaulines had evolved regionally into distinct genera.

We present a reinterpretation of the bones previously identified as ossified hyoid elements in the Asian Late Cretaceous ceratopsian dinosaur Protoceratops andrewsi Granger and Gregory, 1923. Comparisons with other ceratopsian skeletons indicate that the tetraradiate bone tentatively regarded as a first ceratobranchial is actually an incomplete middle cervical rib, and the larger, flattened elements identified as second ceratobranchials are partial sternal plates. As in nearly all other ornithischian dinosaurs for which this area of the skeleton is known, the ossified hyoid apparatus of P. andrewsi probably consisted of a pair of rod-like first ceratobranchials; two additional, splint-like or sheet-like bones that are most frequently interpreted as ceratohyals may also have been present.

Flea holdings from the Carnegie Museum of Natural History and more recent field collections from Papua New Guinea by the junior author (ERE) contained three new species of Striopsylla Holland, 1969, and are described herein: Striopsylla bifurcata, new species; Striopsylla clarki, new species; and Striopsylla flanneryi, new species (Pygiopsylloidea: Stivaliidae, Stivaliinae). New host and distribution records are given for two additional known species of Striopsylla: S. rugata (Jordan, 1937) and S. vandeuseni Holland, 1969. A generic diagnosis is provided, host/parasite relationships are discussed for all species of Striopsylla examined, and a key is provided for all known species of Striopsylla. Miscellaneous records of other flea species belonging to the genera Acanthopsylla Jordan and Rothschild, 1922, Papuapsylla Holland, 1969, and Pygiopsylla Rothschild, 1906, are provided. Pygiopsylla spinata Holland, 1969, is proposed as a junior synonym of Pygiopsylla hoplia Jordan and Rothschild, 1922. With the addition of three newly described species, 78 species of Pygiopsylloidea and eight other species [Ischnopsyllidae (3), Pulicidae (3), and Leptopsyllidae (2)] are documented in Papua Province, Indonesia (West Papua) and Papua New Guinea.

The fauna of staphylinine rove beetles (Staphylinidae: Staphylininae) in early Miocene (Burdigalian) amber of the Dominican Republic is described and figured. In total, seven species are recognized representing two tribes, four subtribes, and five genera. The following taxa are described as new species: Heterothops cornelli, Heterothops infernalis, Holisus funeratus, Philonthus hades, Philonthus rhadamanthus, Quedius electrodominicanus, and Neoxantholinus apolithomenus. A brief summary of Dominican and Mexican amber Staphylinoidea is provided and comments included on the biogeography of ancient Hispaniola.

Five anurans have been previously reported from the Eocene Green River Formation, of which only two, a nearly complete skeleton and a tadpole, have been described. The skeleton has been identified as either Eopelobates Parker, 1929, or a pelobatid close to Eopelobates and Pelobates Wagler, 1830, but the tadpole is indeterminate. Another specimen has been figured but not described, another is a skin impression that is probably indeterminate, and the other is presumably lost. A sixth specimen is reported here. It represents a new genus and species, Aerugoamnis paulus, which is the first anuran to be reported from the Wasatchian (early Eocene) Fossil Butte Member of the Green River Formation. It consists of a single specimen that is dorsoventrally flattened and exposed primarily in dorsal view on one slab of rock, with a poor impression of the skull and a few bone fragments representing the counterpart. The specimen is nearly complete and the bones are preserved in articulation or in close association. The presence of a spiral groove of the iliac shaft suggests affinity with Anomocoela, a hypothesis that was tested through a phylogenetic analysis including representatives of the major clades of Costata, Xenoanura, Neobatrachia, and Anomocoela. The analyzed data set consists of 66 osteological characters scored for six fossil and 20 extant taxa. Results of the analysis place Aerugoamnis as a member of the stem of Pelodytidae. This placement is based on possession of two synapomorphies: presence of a distinct otic ramus of the squamosal and the crista parotica is poorly developed. Unlike extant pelodytids, Aerugoamnis has nasals that are separated by a narrow gap, a ventral flange on the pterygoid, and unfused tibiale and fibulare. Prior to the discovery of Aerugoamnis, fragmentary remains from the middle Eocene of Europe, the earliest of which are Lutetian (MP 13), have been questionably referred to the family. Aerugoamnis now is the earliest known occurrence of the anomocoelan lineage represented today by Pelodytidae.