. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. z LlJ O East Rudolf Paleoecology ⢠Bchrcnsmcyer 489 âºâ¢Â»\*. VOORHIES GROUP III r\ -^* *v> \^ <i°\ c^ .c\ ^\o^ GROUP II VOORHIES .v^ N" V ,\ vC^'v. I â¢â¢^^ â¢^^\^ ^.^---^-^ â . .80 <}^ â < Zone of Overlap ⢠^^^^ VOORHIES GROUP I FLOTATION 50 100 150 200 250 300 350 WET WEIGHT IN GRAMS Figure 4. Plot of density versus wet w^eight for sheep bones showing that these two variables can be related to the Voorhies Dispersal Groups. Group I is the most easily transpor
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. z LlJ O East Rudolf Paleoecology ⢠Bchrcnsmcyer 489 âºâ¢Â»\*. VOORHIES GROUP III r\ -^* *v> \^ <i°\ c^ .c\ ^\o^ GROUP II VOORHIES .v^ N" V ,\ vC^'v. I â¢â¢^^ â¢^^\^ ^.^---^-^ â . .80 <}^ â < Zone of Overlap ⢠^^^^ VOORHIES GROUP I FLOTATION 50 100 150 200 250 300 350 WET WEIGHT IN GRAMS Figure 4. Plot of density versus wet w^eight for sheep bones showing that these two variables can be related to the Voorhies Dispersal Groups. Group I is the most easily transported according to Voorhies' flume experiments, and Group I elements have low densities and/or weights. The scapula and ramus, which do not plot within their dispersal group, indicate that shape has an important effect in their potential for transport under fluid stress. Abbreviations: po = podial, pat = patella, v = vertebra, ph = phalanx, stern = sternum. all bones together (, high density mud- flows ). Using density and weight data for the other animals given in Appendix 1, it is possible to predict, in general, which bones of these animals would sort out with Voorhies Groups I, II and III, under the same experimental conditions. Those ele- ments which fall in the Group I zone and in the mixed Groups I/II zone are listed for each animal in Table 2. If these were placed in the flume with the sheep bones, their size and density should cause them to sort out with the easily dispersed group, and they would be transported away from the other skeletal parts. For the different animals, the same skeletal parts are con- sistently present in Group I, but the num- ber of Group I elements decreases with increased animal size. Since Voorhies Group I is the most easily affected by transport, its presence or ab- sence in fossil assemblages can provide specific information on the sedimentary history of these assemblages. For example, if one of the East Rudolf iissembla
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