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Bryozoans form colonies consisting of clones called zooids that are typically about 0.5 mm (1 ⁄ 64 in) long. [18] Phoronids resemble bryozoan zooids but are 2 to 20 cm (1 to 8 in) long and, although they often grow in clumps, do not form colonies consisting of clones. [19]
Sharks first appeared in the mid Devonian period, and are extremely rare to find anywhere. A variety of teeth from these sharks, some long and sharp, and others flat, can be seen in the collection of Alma College. They were found in Ohio in the late 19th century. Also found from these primitive sharks are spines from their fins, which were ...
Here's what to know about the bryozoan in Ohio. It could actually a colony of small animals. Meet the bryozoan, the mysterious, microscopic animal living in Ohio's bodies of water
Among the important early fossil discoveries in Tennessee was a possible candidate for the first known occurrence of amber discovered in the 1800s near Savannah. [12] Another major event occurred in 1920. At that time fossils extracted from Pleistocene deposits near Nashville had been shipped to the Carnegie Museum. [2]
Fossil specimens of Lichenalia have been found in various parts of the world, including North America (e.g., Ohio, Tennessee, and New York), Europe (e.g., Sweden and the Czech Republic), and Asia (e.g., China and Kazakhstan). The genus has been recovered from rocks of Upper Ordovician to Middle Silurian age, indicating that it existed for a ...
The Chazy Reef Formation is a mid-Ordovician limestone deposit in northeastern North America. It consists of some of the oldest reef systems built by a community of organisms [ 1 ] rather than the deposit of a limited range of similar organisms, such as Stromatolite mounds deposited by ancient cyanobacteria.
But the origin of dinosaurs - precisely when and where they first appeared - remains a bit of a puzzle. ... an area that today includes northern South America and northern Africa," Heath added.
This was South America's first eutherian carnivore. South American procyonids then diversified into forms now extinct (e.g. the "dog-coati" Cyonasua, which evolved into the bear-like Chapalmalania). However, all extant procyonid genera appear to have originated in North America. [70]