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A gastrolith, also called a stomach stone or gizzard stone, is a rock held inside a gastrointestinal tract. Gastroliths in some species are retained in the muscular gizzard and used to grind food in animals lacking suitable grinding teeth. In other species the rocks are ingested and pass through the digestive system and are frequently replaced.
The Geiseltal fossil deposit is located in the former lignite district of the Geiseltal south of the city of Halle in Saxony-Anhalt, Germany. It is an important site of now extinct plants and animals from the Middle Eocene period 48 to 41 million years ago. There is evidence that coal was first mined in the Geiseltal in 1698, but the first ...
British fossil hunter Mary Anning noticed as early as 1824 that "bezoar stones" were often found in the abdominal region of ichthyosaur skeletons found in the Lias formation at Lyme Regis. [7] She also noted that if such stones were broken open they often contained fossilized fish bones and scales as well as sometimes bones from smaller ...
A bezoar stone (/ ˈ b i z ɔː r / BEE-zor) is a mass often found trapped in the gastrointestinal system, [2] though it can occur in other locations. [3] [4] A pseudobezoar is an indigestible object introduced intentionally into the digestive system. [5] There are several varieties of bezoar, some of which have inorganic constituents and ...
In 2002, a study looked at 2 fossil skulls of large canids dated at 16,945 years before present (YBP) that had been found buried 2 metres and 7 metres from what was once a mammoth-bone hut at the Upper Paleolithic site of Eliseevichi-1 in the Bryansk region of central Russia, and using an accepted morphologically based definition of domestication declared them to be "Ice Age dogs". [5]
If Your Dog Has Stomach Issues, These Vet-Recommended Probiotics Could Help. Jamie Ballard, Rebecca Norris. May 30, 2024 at 2:51 PM. 8 Best Probiotics for Dogs With Stomach Issues Purina / Proviable
At least two specimens of Pterodaustro have been found, MIC V263 and MIC V243, with gizzard stones in the stomach cavity, the first ever reported for any pterosaur. These clusters of small stones with angled edges support the idea that Pterodaustro ate mainly small, hard-shelled aquatic crustaceans using filter-feeding. Such invertebrates are ...
A reference to the phenomenon occurs in Dante Gabriel Rossetti's poem "Jenny", which mentions a "toad within a stone / Seated while time crumbles on". [7] In Victor Hugo's Ninety-Three, Danton says to Marat: "for six thousand years, Cain has been preserved in hatred like a toad in a stone. The rock is broken, and Cain leaps forth among men, and ...