Proalbionbaatar

Proalbionbaatar is a small mammal from the Upper Jurassic of Guimarota, Portugal. It's the most derived member of the order Multituberculata known from that locality, and shared the world with much larger dinosaurs.
(For the technically minded, suborder "Plagiaulacida", family Albionbaataridae.)

Genus: Proalbionbaatar Hahn G & Hahn R, 1998
Remarks: The name refers to it being both earlier and more basal than Albionbaatar, a broadly similar form known from the Lower Cretaceous of Dorset, England.

Species: Proalbionbaatar plagiocyrtus Hahn G & Hahn R, 1998
Place: Guimarota
Country: Portugal
Age: Kimmeridgian, Upper Jurassic
Remarks: Remains are presently restricted to two isolated upper molars, which are smaller than the corresponding teeth of paulchoffatiids, (Paulchoffatiidae is the best represented multi group from Guimarota). These teeth also have more cusps, which are arranged in two rows. (Hahn & Hahn 2000, p.106).
(Mit bestem Dank für's Info an David Marjanovic.)
Reference: Hahn & Hahn (1998), Neue Beobachtungen an Plagiaulacoidea (Multituberculata) des Ober-Juras 4. Ein Vertreter der Albionbaartaridae im Lusitanien Portugals. Berliner geowissenschaftliche Abhandlungen E 28, p.85-89.
(New observations of Plagiaulacoidea (Multituberculata) from the Upper Jurassic. 4. A representative of Albiobaataridae in the Lusitanien of Portugals.)

Page references: Hahn G & Hahn R (2000), Multituberculates from the Guimarota mine, p.97-107 in Martin T & Krebs B (eds), Guimarota - A Jurassic Ecosystem, Verlag Dr Friedrich Pfeil, München.
Kielan-Jaworowska Z & Hurum JH (2001), Phylogeny and Systematics of multituberculate mammals. Paleontology 44, p.389-429.

(This information has been derived from [1] (http://home.arcor.de/ktdykes/basmult.htm) MESOZOIC MAMMALS; Plagiaulacidae, Albionbaataridae, Eobaataridae & Arginbaataridae, an internet directory. As that's my webpage, there are no issues of copyright. Trevor Dykes)