. Bulletin of the Natural History Museum Zoology. 104 JENKINS AND SMITH. Fig. 1 Dorsal view of cranium from left to right of C. attenuata BM(NH) , C. hilliana BM(NH) and C. fuliginosa BM(NH) condyle width to height ), the postero-internal ramal fossa has a broad base and is approximately as broad as deep; the mental foramen is positioned below the anterior part of the first lower molar (M,). The dentition is illustrated in Figs 2-6. The first upper incisor (I1) is robust, slightly proodont with well developed posterolingual and posterobuccal
. Bulletin of the Natural History Museum Zoology. 104 JENKINS AND SMITH. Fig. 1 Dorsal view of cranium from left to right of C. attenuata BM(NH) , C. hilliana BM(NH) and C. fuliginosa BM(NH) condyle width to height ), the postero-internal ramal fossa has a broad base and is approximately as broad as deep; the mental foramen is positioned below the anterior part of the first lower molar (M,). The dentition is illustrated in Figs 2-6. The first upper incisor (I1) is robust, slightly proodont with well developed posterolingual and posterobuccal cingula; the upper unicus- pids are overlapping and crowded; the first upper unicuspid (Un1) is large and broad in comparison with the other unicuspids, its breadth is equal to or greater than the distance between the two first unicuspids and this tooth is more than two thirds the height of I1 and P4; the second and third unicuspids (Un2 and Un3) are subequal in size; the upper premolar (P4) has a moderately small parastyle and robust metacone; the first and second upper molars (M1 and M2) show no significant distinguishing features; the third upper molar (M3) is short and slender with a slightly compressed lingual basin. The first lower incisor (I:) is robust, long, deep and curved, and the anterolingual ridge extends for circa three quarters of the length of the tooth, diverging from the ventral border, the posterior border of Ix lies below the middle of the lower premolar (P4); two thirds of the second lower incisor (I2) are in contact with I, and one third of the tooth is overlapped by P4; the postentoconid ledge is very narrow in the first lower molar (M,) and yet more reduced in the second lower molar (M2); the talonid of the third lower molar (M3) is reduced to a single cusp. Etymology This species is named in honour of John Edwards Hill, who taught one of the authors (PDJ) the basics of mammalogy and who also provided invaluable help in the identification of some of th
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