INVESTIGADORES
BOND mariano
congresos y reuniones científicas
Título:
Oligocene Leontiniidae (Mammalia, Notoungulata) from the Sarmiento Formation at Gran Barranca, Chubut province, Argentina
Autor/es:
RIBEIRO, A.M., LĂ“PEZ, G.M., MADDEN, R.H. AND M. BOND.
Lugar:
Trelew, Chubut, Argentina
Reunión:
Jornada; XXIII Jornadas Argentinas de PaleontologĂ­a de Vertebrados, Trelew (Chubut); 2007
Institución organizadora:
Museo Paleontologico Egidio Feruglio
Resumen:
<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:PT-BR; mso-fareast-language:PT-BR;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> ABSTRACT At Gran Barranca, pyroclastic sediments comprising lithostratigraphic units of the Sarmiento Formation include three fossil-bearing levels in the Upper Puesto Almendra Member (GBV-19, GBV-34 and GBV-35) and four in the Colhue-Huapi Member (GBV 8, GBV-9, GBV-10, GBV-38 and GBV-43). Two new taxa occur at GBV-19, one of these, Scarrittia barranquensis n. sp., also occurs at GBV-34. This new taxon shares with S. canquelensis and S. robusta, enlarged and caniniform incisors I1/i3, but is smaller and premolar morphology is distinct. The second new taxon is Henricofilholia vucetichia n. sp., much smaller than S. barranquensis and lacks labial and lingual cingulids on the premolars and molars. A right dentary fragment from GBV-35 with worn m1-3 is here assigned to cf. S. canquelensis. The unique leontiniid