. Prodromus of the paleontology of Victoria; or, Figures and descriptions of Victorian organic remains .. . ^ %^-r. - ■- ^ %, ...r- //l. ^i&ffSS^. /!?« , oUl- et htJi/ frotJifCorj, direx^ Dt ^riuhy ^Ltiqk zmz PALEONTOLOGY OF VICTORIA. IMollusca. Plate XIX., Figs. 1, ACUTICOSTATA (McCoy). [Genus TRIGONIA (Drug.). (Sub-kingd. Mollusca. Class Dithyra. Order Trigoniidse). Gen. Char. —Shell eqnivalve, inequilateral, subtrigonal; outside ridged, inside pearly; rightTalve, with a V-shaped pair of large diverging teeth, transversely sulcated on each si
. Prodromus of the paleontology of Victoria; or, Figures and descriptions of Victorian organic remains .. . ^ %^-r. - ■- ^ %, ...r- //l. ^i&ffSS^. /!?« , oUl- et htJi/ frotJifCorj, direx^ Dt ^riuhy ^Ltiqk zmz PALEONTOLOGY OF VICTORIA. IMollusca. Plate XIX., Figs. 1, ACUTICOSTATA (McCoy). [Genus TRIGONIA (Drug.). (Sub-kingd. Mollusca. Class Dithyra. Order Trigoniidse). Gen. Char. —Shell eqnivalve, inequilateral, subtrigonal; outside ridged, inside pearly; rightTalve, with a V-shaped pair of large diverging teeth, transversely sulcated on each side, receivedbetween -1 teeth, similarly sulcated on one side, in the left valve.] Description.—Rotiindato-rhoniljic,nioderatel)-convex; posterior slope flattened;anterior and ventral margins roumled, posterior margin obliquely sub-truncate, nearlystraight, respiratory angle obtusely rounded, anal angle about ]30° ; surface radiatedwith about 32 acutely angular ribs, about 13 of which are on the posterior slope;the intervening spaces seem wider than the ribs, from the, sides of each rib graduallyconverging to an acutely angular lin
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectpaleontology, bookyea
