User:Ucucha/List of gondwanatheres

Catalog numbers
Individual specimens of animals in natural history collection are usually referred to by a combination of the abbreviated name of the collection and a catalog number. Thus, the tooth LACM 149371—a fossil from the Paleogene of Peru—is a specimen in the Los Angeles County Museum with catalog number 149371. The following collections, with abbreviations as used below, hold gondwanathere specimens:

Anatomy
Gondwanatheres are known from jaw fragments and isolated teeth.

Measurements
All measurements given are in millimeters. The following abbreviations are used for measurements of teeth:
 * H: height
 * L: length
 * W: width

India
A sudamericid gondwanathere was first recorded from India in 1997 on the basis of a single tooth, but not named. After additional material was discovered, the Indian sudamericid was independently named by two teams in 2007, as Bharattherium bonapartei and Dakshina jederi. As the former name was published earlier, it prevails as the correct name for the Indian species. Three additional specimens were provisionally separated from Dakshina jederi on the basis of their small size, but may prove to belong to the same species. The Indian gondwanatheres come from various sites in the Maastrichtian Intertrappean Beds of peninsular India. These deposits and the associated Infratrappean Beds have also yielded the eutherian mammals Deccanolestes, Sahnitherium, and Kharmerungulatum and a member of the archaic mammalian group Haramiyida, Avashishta, in addition to numerous other vertebrates.

Madagascar
Up to four gondwanathere teeth have been recorded from Madagascar, of which only two have been fully described so far. Two were named as Lavanify miolaka in 1997 and two others may represent another gondwanathere or perhaps an entirely different mammalian group. All are from the Anembalembo Member of the Maevarano Formation, which is Maastrichtian in age, though perhaps extending into the Campanian, and contains some other mammals, which have not been fully described, and other animals.

Africa
The mainland African fossil record of gondwanatheres consists of a single fragmentary dentary from the Cretaceous of Tanzania that has been tentatively assigned to Sudamericidae. It is the only mammalian fossil found in the "Red Sandstone Unit", which has also yielded other vertebrates such as dinosaurs.

Antarctica
A few gondwanathere specimens, tentatively referred to Sudamerica ameghinoi, have been found in the Middle Eocene La Meseta Formation of Seymour Island, Antarctica. Other mammals found in this formation include polydolopimorphian and didelphimorphian marsupials as well as ungulates.

Other records
In addition to the more abundant remains from the Salamanca and Los Alamitos Formations, a few more gondwanatheres or possible gondwanatheres have been found at other South American localities. The Santa Rosa local fauna in the Paleogene of Peru has produced a variety of marsupials and caviomorph rodents as well as a few notoungulates (an extinct mammalian group), a possible bat, and a single possible gondwanathere tooth. The Allen Formation of Argentina, which is similar in age to the Los Alamitos Formation, has produced various dryolestoids and a single ferugliotheriid molariform. The La Colonia Formation, also in Argentina but perhaps slightly younger, has produced dryolestoids, ferugliotheriids (which have not been fully described and are not listed here), and Argentodites, which has been interpreted as either a non-gondwanatherian multituberculate or an animal closely related to Ferugliotherium.