Dating your skeleton

21-Sep-2019 01:04

Her condyles are large and are thus adapted to handling the added weight that results from shifting from four limbs to two.The pelvis exhibits a number of adaptations to bipedality.Because of the rare and fragile nature of many fossils, including hominids, molds are often made of the original fossils.The molds are then used to create detailed copies, called casts, which can be used for teaching, research, and exhibits.The vertebrae show evidence of the spinal curvatures necessitated by a permanent upright stance.

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All these indicators, when taken together, suggest that she was a young, but fully mature, adult when she died.

Typically, animals that were killed by predators and then scavenged by other animals (such as hyaenas) will show evidence of chewing, crushing, and gnawing on the bones.

The ends of long bones are often missing, and their shafts are sometimes broken (which enables the predator to get to the marrow).

Back to top As in a modern human’s skeleton, Lucy's bones are rife with evidence clearly pointing to bipedality.

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Her distal femur shows several traits unique to bipedality.

Her third molars (“wisdom teeth”) are erupted and slightly worn, indicating that she was fully adult.