The Red Deer Cave people are a prehistoric archaic human
population. Fossils dated to the Bølling-Allerød warming
, between about 14,500 to c. 11,500 years ago, were found in Red Deer Cave (Maludong, ) and Longlin Cave, Yunnan
Province, in Southwest China
The fossils exhibit a mix of archaic and modern features and are tentatively thought to represent a late survival of an archaic human
species, or of a hybrid
population of Denisovan hominin
and modern human
descent, or alternatively just "robust early modern humans
, probably with affinities to modern Melanesians
Evidence shows large deer were cooked in the Red Deer Cave, giving the people their name.
Discovery and dating
In 1979, the partial skull of a cave dweller
was found in Longlin Cave in the Guangxi
region of China. Additional human remains were excavated from Maludong in 1989.
In 2012, the Red Deer Cave fossils were indirectly radiocarbon dated
between 14,300 and 12,600 years before present, using charcoal found in the fossil deposits. The single Longlin fossil was dated to 11,500 years before present (mean calibrated age 11,510±255 95% CI
A partial thighbone was discovered in Maludong in 1989, along with a partial jaw, cranial bones, and teeth. The dating of the bones has led to confusion and division among researchers. The anatomy of the bones, without successful DNA testing, shows them to be archaic humans, like early ''Homo erectus
'' or ''Homo habilis
'' which lived around 1.5 million years ago in Africa. Researcher Darren Curnoe believes that the cave people were a new evolutionary line. This is because of the skulls are different from both modern humans and human skulls found in Africa dating back 150,000 years. From the thighbone analysis, it is believed that they roamed the same landscape as modern humans for 60,000 years.
In spite of their relatively recent age, the fossils exhibit archaic human
The Red Deer Cave dwellers had distinctive features that differ from modern humans, including: flat face, broad nose, jutting jaw with no chin, large molars, prominent brows, thick skull bones, and moderate-size brain.
As with some other pre-modern humans, their body size was small, with an estimated mass of .
From the shape of the thighbone, it is believed that the Red Deer Cave People may have been knock-kneed
. Curnoe's previous works showed the bones and teeth were remarkably similar to that of archaic humans. This is despite their having lived until recently, between 14,000 and 11,000 years ago. The reconstruction of the Maludong femur confirmed it was very small with the outer shell, or walls, are very thin. The areas of the wall that were of high strain, and the femur neck, are relatively long; the place of muscle attachment for the primary flexor muscle of the hip (the lesser trochanter) was robust and faced strongly backward.
Experts are reluctant to classify the Red Deer Cave people as a new species.
They might represent a previously unknown archaic human
lineage, or the result of mating between Denisovan
s and modern humans
or alternatively a thoroughly anatomically modern human
population with unusual physiology.
However, research shows the Red Deer Cave people appear similar to more archaic lineages such as ''Homo erectus
'' or ''Homo habilis''.
Specifically, the specimen appears most similar in most of the characteristics to KNM-ER 1481,
a ''Homo'' ''Erectus'' from 1.89 Mya found in Africa. Others have noted similarities to ''Australopithecus
'' (taken to mean beyond ''Homo'', ed.)''.'' Attempts to isolate ancient DNA
from the fossils have not been successful.
One theory suggests that the Red Deer Cave people were early humans that settled into the region more than 100,000 years ago and became isolated.
The high mountains and deep valleys are ideal in isolating species geographically, so it is possible for a species to migrate to the area and become genetically isolated over time. The environment and climate of Southwest China are unique owing to the tectonic uplift of the Qinghai-Tibetan Plateau
. The Yunnan province still today has some of the greatest biodiversity in all of China.
Since as yet no DNA has been successfully extracted from the bones, the research that has been done is leading to the conclusion that the Red Deer Cave People are the result of a hybridization with modern humans. Another theory that has been stated by Maciej Henneberg
, a professor at the University of Adelaide and an expert in human anatomy, is that the bone is not that of a primate at all. It may be a deer's femur that has degraded to the point it was misidentified.
* Interbreeding between archaic and modern humans
* Timeline of human evolution
* Timeline of the evolutionary history of life
Defining ‘human’ – new fossils provide more questions than answers
(article by Darren Curnoe in ''The Conversation'', March 15, 2012)
Enigma Man: A Stone Age Mystery
(Aired by ABC TV on Tuesday 24 June 2014, 8:30pm)
Human Timeline (Interactive)
, National Museum of Natural History
Category:Upper Paleolithic Homo sapiens fossils
Category:History of Guangxi
Category:History of Yunnan
Category:Paleolithic sites in China
Category:1979 archaeological discoveries
Category:Undescribed vertebrate species
Category:Honghe Hani and Yi Autonomous Prefecture