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Microbes that cause cavities can form superorganisms able to ‘crawl’ and spread on teeth（图）
蛀牙 微生物 超有机体
2023/7/7
Across-kingdom partnership between bacteria and fungi can result in the two joining to form a “superorganism” with unusual strength and resilience. It may sound like the stuff of science fiction, but ...
Shark teeth offer clues to ancient climate change（图）
Shark teeth clues ancient climate change
2021/2/5
A character in a great white shark movie said that all sharks do is "swim and eat and make little sharks."It turns out they do much more than that. Sharks have roamed Earth's oceans for more than 400 ...
Ancient teeth from Peru hint that now-extinct monkeys crossed the Atlantic from Africa（图）
Ancient teeth Peru now-extinct monkeys crossed Atlantic Africa
2020/4/17
Four fossilized monkey teeth discovered deep in the Peruvian Amazon provide new evidence that more than one group of ancient primates journeyed across the Atlantic Ocean from Africa, according to work...
The tale teeth tell about the legendary man-eating lions of Tsavo
The tale teeth tell legendary man-eating lions Tsavo
2017/4/27
An analysis of the microscopic wear on the teeth of the legendary “man-eating lions of Tsavo” reveals that it wasn’t desperation that drove them to terrorize a railroad camp in Kenya more than a centu...
Topography of Teeth:Smithsonian Scientist Strengthens Tools To Track Animal,Ecosystem Responses to Major Environmental Changes
Topography of Teeth Smithsonian Scientist Strengthens Tools Track Animal Ecosystem Responses Environmental Changes
2016/11/29
By charting the slopes and crags on animals’ teeth as if they were mountain ranges, scientists at the Smithsonian’s National Museum of Natural History have created a powerful new way to lear...
How do shark teeth bite?Reciprocating saw,glue provide answers
shark teeth Reciprocating saw glue
2016/9/29
Sharks have a big reputation for their teeth.The ocean predators use their buzz saw mouths to efficiently dismantle prey, ranging from marine mammals and sea turtles to seabirds and — as Hollywood lik...
EVANSTON, Ill. --- Beavers don’t brush their teeth, and they don’t drink fluoridated water, but a new Northwestern University study reports beavers do have protection against tooth decay built into th...
Ancient shark teeth give clues to future of Arctic climate change
Sharks The North Pole. Tundra Animal Temperate forests Temperature The ocean Deep sea
2014/7/18
A new study of sharks that lived in warm Arctic waters millions of years ago suggests that some shark species could handle the falling Arctic salinity that may come with rising temperatures.
Isolated dinosaur teeth from the Lower Cretaceous Shahai and Fuxin formations of northeastern China
Dinosaurs Isolated teeth Shahai Formation Fuxin Formation Early cretaceous China
2014/3/26
Isolated dinosaur teeth recovered from seven localities near Fuxin (western Liaoning Province, northeast-ern China) are described. They come from sediments belonging to the Shahai and Fuxin formations...
Ctenacanthiform Cladodont Teeth from the Lower PermianWichita Group,Texas,U.S.A.
Ctenacanthiform shark teeth Lower Permian Artinskian Texas USA
2009/10/20
Isolated teeth of Glikmanius occidentalis occur in ten vertebrate faunas in theWaggoner Ranch Formation and in one fauna in the underlying Petrolia Formation. They range in size (anteromedial-posterol...
New chondrichthyan teeth from the Early Carboniferous of Britain and Russia
Viséan-Serpukhovian Carboniferous Anachronistidae Ginteria gen.nov.
2009/10/20
Ginteria fungiforma gen. et sp. nov. is described on the basis of isolated teeth from the Viséan (Brigantian) of the Matlock Limestone Formation of Derbyshire, England and the Late Viséan (Msta Format...
Pharyngeal Teeth, Lateral Ethmoids, and Jaw Teeth of Fishes and Additional Fossils From the Late Miocene (Late Khersonian / Early Maeotian) of Eastern Paratethys (Yalova, Near İstanbul, Turkey)
pisces systematics biostratigraphy Neogene Turkey
2009/7/7
A late Khersonian to early Maeotian fossil assemblage from the Upper Miocene to Lower Pliocene Yalakdere Formation near Yalova city (northwestern Anatolia, Turkey) is documented. The following fish ta...
Analysis and Discussion of Trace Elements in Teeth of Different Animal Species
Trace Elements Different Animal Species
2010/10/15
Human, bovine and swine teeth were analyzed by Proton Induced X-ray Emission (PIXE). The aim of this work was to determine the concentration of trace elements in enamel and dentine of different animal...
Determination of 90Sr Accumulation in Human Teeth
Tooth 90Sr 90Y Calcium Flame atomic absorption spectrometer
2010/4/21
The accumulation of 90Sr in decayed or exfoliated human teeth was investigated by ultra low level beta counting. Fuming nitric acid and the necessary carriers and reagents were used for dissolving the...