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Published online by Cambridge University Press: 27 June 2018
Complete-Animal Units extended along the bottom of the arroyo from Section 5 on the east to Section 22 on the west (Figs. 30A, 3L4). They were not continuous throughout, and occurred with greatest frequency in the deeper eastern part of the arroyo.
Generally speaking, complete-animal units were confined to the inner channel of the arroyo and were thereby constrained to an east or west orientation. However, Units 369,433, 519, 141, and 190 rested at least partly on the upper channel wall.
One group of 8 complete-animal units (290, 324, 327, 366, 367, 369, 398, 433) began in the central part of Section 5 and continued almost to Section 10. In Sections 5 and 6, and again in Section 8, they formed a layer at least 2 deep. No complete-animal units were found in Section 10, but following this gap, another (519) was found in the east end of Section 11. A single complete-animal unit (190) occurred along the Section 16-17 line, and another (93) occupied the bottom of the arroyo from the central part of Section 18 well into Section 19.