The human ear bones are extremely important evidence of exaptation, the evolutionary repurposing of an existing structure. The human ear bones were a part of the reptile jaw that migrated back to the ear over millions of years. This migration is extensively well-documented by the bones' vary...
Um, hi. You're looking at snake's pelvic spur. While it looks like a claw, it's actually what's left of the pelvis & femur in some snakes. These bones are not connected to the spine. They just float . And some python/boa species use them to tickle each other during courtship. S...
In order to rule out the possibility that we were studying morphological extremes in two animals used for the locomotion analysis, we additionally measured skeletal properties in the few available adult (fused epiphyses of long bones) C. didactylus individuals obtained from German museum collections (...
Together with the escalator concept, they form the double neuro-osseous the ory (Figure 1). It has common ground with the thoracospinal concept[59–63]. These findings for AIS girls and the severe trunk asymmetry of healthy adolescents [123–125] are consistent with the hypothesis that the ...
Bardeleben K von (1894) On the bones and muscles of the mammalian hand and foot. Proc Zool Soc Lond 1894:354–376 Bargo MS (2003) Biomechanics and palaeobiology of the Xenarthra: the state of the art. Senckenb Biol 83:41–50