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meaning: "Complete jaw"
Named By: Min Zhu, Xiaobo Yu, Per Erik Ahlberg, Brian Choo, Jing Lu, Tuo Qiao, Qingming Qu, Wenjin Zhao, Liantao Jia, Henning Blom & You'an Zhu in 2013
Time Period: Late Ludlow
Location: China, Yunnan Province
Size: Roughly estimated at about 20 centimetres long
Diet: Carnivore
Fossil(s): Partial remains
Classification: | Chordata | Gnathostomata | Placodermi |

Entelognathus primordialis ("primordial complete jaw") is a placoderm from the late Ludlow epoch of Qujing, Yunnan, 419 million years ago.

A team led by Min Zhu of the Academy of Sciences' Institute of Vertebrate Paleontology and Paleoanthropology in Beijing discovered the intact, articulated fossil in rock formations at Xiaoxiang reservoir.

Read more about Entelognathus at Wikipedia
PaleoCodex is a weekend hack by Saurav Mohapatra