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handle: 10261/2325
Se describen tres nuevas especies de nutrias bunodontas del Mio-plioceno de Africa oriental. Provisionalmente se adscriben al género Sivaonyx Pilgrim 1931. Las especies descritas son Sivaonyx soriae nov. sp y Sivaonyx senutae nov. sp. del Mioceno final de la formación Lukeino (Kenia), y Sivaonyx kamuhangirei nov. sp del Plioceno de Kazinga y Warwire (Uganda). También se describen nuevos fósiles de Sagatia, formación Magabet (Kenia) atribuibles a la especie Sivaonyx ekecaman (Werdelin, 2003). Se discute la sistemática de la nueva tribu Enhydriotini y se señala la presencia de dos tendencias evolutivas en las nutrias bunodontas africanas: incremento de talla y modificación de las carniceras. Especialmente del P4/ en el que el protocono se va separando del paracono, al mismo tiempo que se desarrolla un valle en posición anterior.
QE1-996.5, Giant bunodont Lutrinae, Geology, Uganda, Mio-Pliocene, Kenya
QE1-996.5, Giant bunodont Lutrinae, Geology, Uganda, Mio-Pliocene, Kenya
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