Véra Eisenmann

Natural Trap, Femora, Data

vendredi 18 octobre 2013 par Véra Eisenmann

In Table 1 are the original data (2 sheets) provided by John Howe. One specimen was measured twice ; two seem to be the left and right of the same animal. In Table 2 are the data I used (diaphysis and proximal depths were not used because they are difficult to measure and bring little information) ; later on I discarded also the diameter of caput femoris because of its too large variation.

Scatter diagrams (Fig.1-2) show three very large and robust specimens ; a large variation exists even among the other femora. Most Natural Trap femora are bigger than in extant E. hemionus onager.

Robust Femora (Fig.3)
- The largest one is similar to the average Amerhippus leoni.
- Two smaller may belong to a Caballine.

Gracile and very gracile Femora (Fig.4)
I am unable to propose any attribution for these specimens.


titre documents joints

Table 2. Femora Data, by numbers

18 octobre 2013
info document : Excel
18.5 ko

Table 1. Femora Data, sheets

18 octobre 2013
info document : Excel
17 ko

Fig.4 Natural Trap Femora gracile, Simpson’s diagrams

18 octobre 2013
info document : Excel
54 ko

Fig.3 Natural Trap Femora robust, Simpson’s diagrams

18 octobre 2013
info document : Excel
37.5 ko

Fig.2 Natural Trap Femora, Scatter diagram 8 on 1

18 octobre 2013
info document : Excel
32.5 ko

Fig.1 Natural Trap Femora, Scatter diagram 3 on 1

18 octobre 2013
info document : Excel
27.5 ko

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