. Brigham Young University science bulletin. Biology -- Periodicals. Fig. 4. Ventral view of carpal bones from left manus. A. Sauromalus obes7is multiforaminatux. BYU 1173(5. x 4. B. Sauromalus obesus niultiforaminatus. BYU 11734. x 5. C. Ctenosaiira hemilopha. BYU 14618. x 5. D. Crotaphytiis wiMzeni wislizeni. BYU 16748. x 6. E. Sceloporus magi>iter magister. BYU 15236. x 6. F. Dipsosaurus dor^alis. BYU 21727. x 6. Key to abbreviations used on Figs. 4 and 5: dc-distal centrale, i-intermedium, p- pisiform, pc-proximal centrale, R-radius, r-radiale, U-ulna, u-ulnare, 1-5-carpals, I-V- proxim
. Brigham Young University science bulletin. Biology -- Periodicals. Fig. 4. Ventral view of carpal bones from left manus. A. Sauromalus obes7is multiforaminatux. BYU 1173(5. x 4. B. Sauromalus obesus niultiforaminatus. BYU 11734. x 5. C. Ctenosaiira hemilopha. BYU 14618. x 5. D. Crotaphytiis wiMzeni wislizeni. BYU 16748. x 6. E. Sceloporus magi>iter magister. BYU 15236. x 6. F. Dipsosaurus dor^alis. BYU 21727. x 6. Key to abbreviations used on Figs. 4 and 5: dc-distal centrale, i-intermedium, p- pisiform, pc-proximal centrale, R-radius, r-radiale, U-ulna, u-ulnare, 1-5-carpals, I-V- proximal phalanges. as in a juvenile (Fig. 4), only four are present. Radiate (Figs. 4 and 5) is a large carpal found directly distal to the radius. It forms part of the proximal row of carpal elements and was constantly present in all genera ex- amined. Ulnarc (Figs. 4 and 5) articulates at the distal end of the ulna and the proximal end of Carpal 5. Pisiform (Figs. 4 and 5) is a large carpal shown in the X-ray photographs as being just lateral to the ulna. Several photographs did not show the pisiform to be present. In such cases it may have been obscured by the ulna. Proximal Centrale (Figs. 4 and 5) appears to be a stable central element in the carpal pattern. It is usually found articulating be- tween Carpals 2 and 3 distally, and the ulnare, radiale, and intermedium proximally. Distal Centrale (Figs. 4 and 5) can be told from the proximal centrale by its distal position. It appears to be a rather unstable bone and is not present in most specimens as is the case in the adult specimen of Sauro- maliis. It is interesting to note that in the juvenile (Fig. 4) this bone appears to be. 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 Brigham Young University. Provo, Utah : Brigham Young University
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