Reconstructing the face of the Gibraltar 2 (Devil's Tower) Neanderthal child

 

The Gibraltar 2 Neanderthal child specimen is represented by 5 cranial fragments recovered by Dorothy Garrod at the Devil’s Tower site in Gibraltar (Garrod et al., 1928). Methods of computer-asissted paleoanthropology (CAP) were used to reconstruct and complete the fragmentary remains and to produce a quantitative estimate of the soft tissue dimensions.

 

 Non-invasive 3-dimensional volume data acquisition of the fossil remains was performed with medical Computer Tomography (CT).

 Using the special-purpose software toolkit FoRM-IT, the fossil fragments were transformed into virtual 3D objects on a computer screen. The isolated parts were positioned in anatomical space according to biological criteria, and missing regions were completed with mirror-imaged counterparts of preserved fragments.

 The virtual reconstruction was transformed into a physical model using laser stereolithography.

 

Virtual and stereolithographic reconstructions of the Devil's Tower Neanderthal child

 

 Soft tissue structures were extrapolated with 3D Thin Plate Splining (TPS) techniques (Bookstein, 1991) from combined skeletal/soft tissue data from a modern child of comparable dental age.

Soft tissue morphing from a modern child (age 4y) to the Devil's Tower Neanderthal child

 

 The facial soft tissue layers, ears and other facial traits were reconstructed with a plasticine paste that was applied directly onto the stereolithographic replica, according to the results produced with the TPS morphing procedure.

Modelling the soft tissue

 

 The final model was cast in silicon and carefully painted, giving a vivid impression of the natural texture of human skin. The face obtained its final touch through one-by-one implantation of human hair.

The Devil's Tower Neanderthal child (model reconstruction: E. Daynès, Paris)

 

 

Beyond paleoanthropology

CAP and biomedical applications