. Catalogue of the fossil Mammalia in the British museum, (Natural History). Mammals, Fossil. 270 MAESUPIALIA. Genus PHASCOLOTHERIUM, Owen \ Dentition:—I. ^, C. j-, Pm. + M. '-. Molars and premolars very similar in structure; a diastema between lower canine and pre- molars ; true molars tricuspidate, with inner cingulum, which has no cusp on the inner side of the crown, hut develops a distinct accessory cusp at each extremity of the crown; mandibular ramus deep. Owen considered that there were probably only three lower incisors, but the writer is convinced, from an examination of the type spec
. Catalogue of the fossil Mammalia in the British museum, (Natural History). Mammals, Fossil. 270 MAESUPIALIA. Genus PHASCOLOTHERIUM, Owen \ Dentition:—I. ^, C. j-, Pm. + M. '-. Molars and premolars very similar in structure; a diastema between lower canine and pre- molars ; true molars tricuspidate, with inner cingulum, which has no cusp on the inner side of the crown, hut develops a distinct accessory cusp at each extremity of the crown; mandibular ramus deep. Owen considered that there were probably only three lower incisors, but the writer is convinced, from an examination of the type specimen, that there were four of these teeth. Phaseolotherium bucklandi (Broderip^). Syn. Didelphis bucklandi, Broderip ^. Thylacotherium bucklandi, Valenciennes "*. This is the type and only named species ; and was about equal in size to PTiascogale penicillata; the length of the lower series of cheek-teeth being 0,012. ITab. Europe (England). 112. The nearly entire right ramus of the mandible, containing {Fig.) all the teeth except ITA:', from the Lower Jurassic Slate of Fig. 40. Fhascolotherium huchlandi.—Inner view of the right ramus of the mandible; from the Stonesfield Slate, f. The outline figure is nat. size. (From Owen's ' Palaeontology.') Stonesfield, Oxfordshire. This specimen (woodcut, fig, 40) is the type, and is figured by Broderip in the ' Zool. Journ.' vol. iii. pi. xl. ; by Buckland in his ' Bridge water Treatise,' 1 Trans. Geol. Soc. ser. 2, vol. vi. pt. 1, p. 58 (1841). "^ Zool. Journ. vol. iii. p. 411 (1828).—Didelphis. ^ Loc. cit^ * Oomptes Eendus, vol. vii. p. 580 (1838).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). Dept. of Geology; Lydekker, Richard, 1849-1915. London, Printed by order of the Trustees
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