. Bulletin - United States National Museum. Science. :Figure 65.—LUaletes disjunctus Simpson, no. 9324, right upper jaw: a, view; 6, crown view. Throe times natural size. The lower canine is a small but tall, erect, spat- ulate tooth. Pi is low, l-rooted, with a minute heel. P2-3 are more ad- vanced than in Ellipsodon in that each has a distinct paraconid. The heel is, how^ever, relatively short, and only half its v/idth is formed by the incipient basin. The anterior blade of the protocone is dis- tinctively modified into a sort of shearing crest. The lower molars close- ly
. Bulletin - United States National Museum. Science. :Figure 65.—LUaletes disjunctus Simpson, no. 9324, right upper jaw: a, view; 6, crown view. Throe times natural size. The lower canine is a small but tall, erect, spat- ulate tooth. Pi is low, l-rooted, with a minute heel. P2-3 are more ad- vanced than in Ellipsodon in that each has a distinct paraconid. The heel is, how^ever, relatively short, and only half its v/idth is formed by the incipient basin. The anterior blade of the protocone is dis- tinctively modified into a sort of shearing crest. The lower molars close- ly resemble those oi Ellip- sodon aquilonius, but Mi has trigonid and talonid of nearly equal width, M2 has trigonid generally markedly wider, and M3 is less reduced. no. 6179 from Log. 51, includes an M2 morphologically 3ompa- rable to this species and measuring by mm, near the means for the Gidley Quarry specimens. There is, however, an upper jaw with M^"^ from the same locality, dimen- sions given in table 53, that is morphologically very close to this spe- cies but notably smaller than the available Gid- ley Quarry specimens. Since, however, these are only two in number it cannot be assumed that a real difference exists. The greatest relative dif- ference, in length of M^. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
