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Gnathostome diversity comprises roughly 60,000 species, which accounts for 99% of all living vertebrates, including humans. Most gnathostomes have retained ancestral traits like true teeth , a stomach , [ 2 ] and paired appendages (pectoral and pelvic fins, arms, legs, wings, etc.). [ 3 ]
The teeth-like fossils of the conodont were first discovered by Heinz Christian Pander and the results published in Saint Petersburg, Russia, in 1856. [2]It was only in the early 1980s that the first fossil evidence of the rest of the animal was found (see below).
Lomekwi is an archaeological site located on the west bank of Turkana Lake in Kenya.It is an important milestone in the history of human archaeology. An archaeological team from Stony Brook University in the United States discovered traces of Lomekwi by chance in July 2011, and made substantial progress four years after in-depth excavations.
A study on the teeth mineralization process and teeth histology in extant and fossil members of the genus Hemipristis is published by Jambura et al. (2018). [35] A study on the global and regional morphological variation of the teeth of the ground sharks and mackerel sharks across the Cretaceous–Paleogene boundary is published by Bazzi et al ...
The log structure was made at least 476,000 years ago, while the wood tools are slightly younger, under 400,000 years old. That places the materials in a time before our species, Homo sapiens ...
The earliest deposited generations of accessory teeth in each row are located at the tip of the whorl spiral labially of the primary teeth. Unlike the continuously shedding teeth of modern sharks, [7] the tooth whorls of Qianodus retained their teeth and grew in size throughout the life of the animal. The recorded gradual enlargement of the ...
Fuyan Cave (Chinese: 福岩洞) is a complex of limestone caves in Tangbei village, Lefutang town, Daoxian, [1] Hunan province, south central China famous for the discovery of the oldest evidence for unambiguously fully modern humans outside Africa. [2] 47 human teeth, dating to between 80,000 and 120,000 years ago, were discovered at Fuyan ...
Mehrgarh is a Neolithic archaeological site (dated c. 7000 BCE – c. 2500/2000 BCE) situated on the Kacchi Plain of Balochistan in Pakistan. [1] It is located near the Bolan Pass, to the west of the Indus River and between the modern-day Pakistani cities of Quetta, Kalat and Sibi.