Production tools: making stone tools

Mode of labor: gathering and hunting

Social Organization: Primitive Man

Physical characteristics: From the two teeth unearthed from the fossil origin, it can be known that these are the upper central incisors of the same individual, with deep fossils and gray appearance. Their bodies are thick and huge, with a low degree of wear and tear, and their front teeth just show their dentin, which may belong to young male individuals. The characteristics of these two kinds of teeth are that the base of the crown is enlarged and thick, and the nodules at the base are developed, showing dome-shaped protrusions, developed finger-like protrusions and shovel-shaped lingual fossa on the tongue surface. The basic form is close to that of Homo erectus in Beijing, but it is primitive to some extent.

Beijing natives

Production tools: making stone tools

Mode of labor: gathering and hunting

Social Organization: Primitive Man

Physical characteristics: the skull cover is low and flat, the forehead leans backward, the widest part of the skull is low, there is an obvious wide groove between the frontal scales of the orbital occipital bone, the skull has sagittal ridges, the nasal bone is wide, it belongs to a wide nose type, close to an ultra-wide nose type, the cheekbones are high, the cheekbones are vertical, the snout is slightly protruding without the mandible, the mandible has the occipital bone, the teeth are thick and the front teeth are shovel-shaped, and the average brain capacity is about 65438. The upper limb bone is shorter than the lower limb bone, which is similar to that of modern people.

Prehistoric caveman

Making tools: making stone tools, polishing and drilling.

Labor mode: gathering, fishing and hunting.

Social organization: clan commune

Physical features: thick skull, long head, oblique forehead, low upper face, low eyes and wide pear-shaped hole.

These are the notes given by the senior one teacher. That's about it. I hope to adopt.