. On vertebrata of the mid-Cretaceous of the North West Territory [microform]. Vertebrates, Fossil; Paleontology; Vertébrés fossiles; Paléontologie. 37 Br nvt!',??ipa<'<', ilarily ol'srrowth -^ i;. iiii il 1875, Vortihnitii or lilOI, p. 81, pis. This Mpi'cii's was first dt'HiTilx'il Il III "II n\iiiil)iT (•!' traifiui'iltsot ooslal Ixmi'S and pi-rhapK of sicrnais also" from thu " Li-^iiiti' Cnln imhis of Colo- rado ; near the mouth ol' ihi' l!i^ Horn river, Montana ; ; lake, ; roon<l at I lie last two localitii's by Dr. ; Later, in
. On vertebrata of the mid-Cretaceous of the North West Territory [microform]. Vertebrates, Fossil; Paleontology; Vertébrés fossiles; Paléontologie. 37 Br nvt!',??ipa<'<', ilarily ol'srrowth -^ i;. iiii il 1875, Vortihnitii or lilOI, p. 81, pis. This Mpi'cii's was first dt'HiTilx'il Il III "II n\iiiil)iT (•!' traifiui'iltsot ooslal Ixmi'S and pi-rhapK of sicrnais also" from thu " Li-^iiiti' Cnln imhis of Colo- rado ; near the mouth ol' ihi' l!i^ Horn river, Montana ; ; lake, ; roon<l at I lie last two localitii's by Dr. ; Later, in "TheVerte- lirata of the C'retaeeous Formations of the West" thesamedeseription appeiirs; this time with fii^ures oftwo Iragments of eOAtal bones. A carapace (lijf. ;1) referable to this speeies. Was obtained in ll'Ol, from the Helly River series of lied IJi'er rivi r below Berry Ihl' nl t|„ si 7Vl"„l/..- ...;//l.,., Kvil I I Ut\*'mMI- ll|lIMr dill ttn> ;i-. ill li^iiin- I. ;5I. It is broader than lomj. the breadth exeeoding the length by more than oni- sixth, and is only moderately run vex In outline, as seen from above, it is Hat behind with the sides curving broadly to the front maririii, n' the centre of which then is a shallow concavity. The shell protrudes where the ribs pass outward from luiieath, causing the lateral margin to be sinuous, the sinuosity beitig most marked toward the front in the lirst, second and third pairs of costal plates. Of the eight jiairs ofcostals, the lirst co:>lals are the broadest at the inner ends, whilst the lifth are the broadest distally. The seventh costals are extremely narrow throughout their length and thin'ighth pair is w ell developed. The lirst costals increase in breadth rather suddenly at their outerendsand are separated by a divided lirst neural plate. The ueurals gradually decrease in breadth to the lifth, their siiles being uot so nearly parallel to each ot
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectpaleont, bookyear1902
