Catopsbaatar
Catopsbaatar is a genus of multituberculate, an extinct order of rodent-like mammals. It lived in what is now Mongolia during the late Campanian age of the Late Cretaceous Period, about 72 million years ago. The first fossils were collected in the early 1970s, and the animal was named as a new species of the genus "Djadochtatherium " in 1974, "D. catopsaloides". The specific name refers to the animal's similarity to the genus "Catopsalis". The species was moved to the genus "Catopsalis" in 1979, and received its own genus ("Catopsbaatar", Greek and Mongolian for "visible hero") in 1994. Five skulls, one molar, and one skeleton with a skull are known; the latter is the genus' most complete specimen. "Catopsbaatar" was a member of the family Djadochtatheriidae.
Cryobatrachus
Fossils of "Cryobatrachus" were first found by South African paleontologist James Kitching in the austral summer of 1971–72 as part of an expedition headed by the Institute for Polar Studies at Ohio State University, now known as the Byrd Polar Research Center. Paleontologists Edwin Harris Colbert of the American Museum of Natural History and John Cosgriff of Wayne State University described these fossils in 1974, positing the new genus and species "Cryobatrachus kitchingi" with the specific name honoring Kitching. All specimens were uncovered from the lower part of the Fremouw Formation, which dates back to the Early Triassic. The holotype specimen, cataloged as AMNH 9503, is a partial skull with the ventral surface of the dermal bones present. The palate and braincase are not preserved. An additional paratype specimen called AMNH 9556 includes an impression of the skull roof, but no preserved bones. AMNH 9503 was found on Kitching Ridge (which is also named after James Kitching) near Shackleton Glacier, and AMNH 9556 was found on Mount Kenyon near McGregor Glacier. Two crushed skulls from Kitching Ridge were also considered possible specimens of "Cryobatrachus", as was part of an upper jaw from Halfmoon Bluff (which is on the opposite side of Shackleton Glacier as Kitching Ridge). Colbert and Cosgriff tentatively attributed six smaller fragments from Coalsack Bluff to "Cryobatrachus", including parts of lower jaw, the clavicle, and the interclavicle. Fifteen other Coalsack Bluff fragments, attributed as possible remains of "Cryobatrachus" based on their small size alone, were described. These bones included parts of the legs, hips, vertebrae, and skull. A 1977-78 expedition found a bone fragment on Collinson Ridge and an interclavicle on Shenk Peak southeast of the paratype locality on Mount Kenyon, both of which were referred to "Cryobatrachus" in 1984.