. Carnegie Institution of Washington publication. BAENIIX*. 75 width at its base is 125 mm.; its length in the middle line is 90 mm. At a point half-wav between the tip and the base the width is 88 mm. The width of the bridge is 145 mm. The hinder lobe of the plastron is broadly tongue-shaped, with the tip truncated and broadly notcht. At its base this lobe is 125 mm. wide; and in the midline it is 100 mm. long. The sutures between the various bones of the shell are usually verv obscure, but most of them are determinable. The limits of the neurals (fig. 57) are somewhat conjectural. Those betw


. Carnegie Institution of Washington publication. BAENIIX*. 75 width at its base is 125 mm.; its length in the middle line is 90 mm. At a point half-wav between the tip and the base the width is 88 mm. The width of the bridge is 145 mm. The hinder lobe of the plastron is broadly tongue-shaped, with the tip truncated and broadly notcht. At its base this lobe is 125 mm. wide; and in the midline it is 100 mm. long. The sutures between the various bones of the shell are usually verv obscure, but most of them are determinable. The limits of the neurals (fig. 57) are somewhat conjectural. Those between the costals and the peripherals run probably close to the sulcus between the costal and peripheral bones. The most anterior peripherals, however, rise above this sulcus. The sutures of the plastron are hard to trace. Only the general course of those limiting the entoplastron and the epiplastra is discernible. The sutures between the bones of the plastron and the peripherals lie about 44 mm., mesiad of the shell margin. At a point about 40 mm. behind the axillary notch is observed the suture between the hyoplastron and the mesoplastron. Its course is inward and somewhat backward to a point in the midline about 66 mm. behind the line joining the axillary notches. Another distinct suture may be observed about 38 mm. in front of the inguinal notch on the left side. It can be traced toward the midline, where it becomes obscure. This suture is that betw-een the mesoplastron and the hypoplastron. Thus the inner ends of the mesoplastron are about 24 mm. wide. 57-. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington


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