Neanderthal Cranio-Cervical Features: Morphological Integration and Functional Evaluation of Their Early Appearance

Area of Science:

• Paleoanthropology
• Human Evolution
• Skeletal Biology

Background:

• Neanderthals (Homo neanderthalensis) exhibit unique cranial and postcranial features.
• These traits emerged in European Middle Pleistocene populations, potentially due to adaptation or genetic drift.
• The "accretion model" links trait accumulation to glacial cycles and population bottlenecks.

Purpose of the Study:

• To review early Neanderthal lineage traits.
• To interpret these features as an integrated morpho-functional system.
• To address the controversial functional significance of cranio-cervical, mandibular, and facial traits.

Main Methods:

• Literature review of cranio-cervical traits in Homo neanderthalensis.
• Analysis of early Neanderthal lineage features.
• Functional interpretation of morphological traits within an integrated framework.

Main Results:

• Identification of a set of early-emerging Neanderthal traits.
• Proposal of a morpho-functional system integrating cranio-cervical, mandibular, and facial features.
• Highlighting the need for integrated analysis over isolated trait studies.

Conclusions:

• Early Neanderthal cranio-cervical, mandibular, and facial features likely functioned as an integrated system.
• This integrated system may have been influenced by environmental pressures like glacial conditions.
• Further research is needed to fully understand the functional significance of these interconnected traits in human evolution.