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The oldest known specimen of Orthacanthus, Diplodus problematicus, was found in New Brunswick, Canada, in the Lower Devonian (Emsian, c. 407 to 393 million years ago). [5] Other specimens have been found in locations including the US, the United Kingdom, Poland, and France. [5]
Burrow et al. 2016 provides vindication by finding chondrichthyans to be nested among Acanthodii, most closely related to Doliodus and Tamiobatis. [2] A 2017 study of Doliodus morphology points out that it appears to display a mosaic of shark and acanthodian features, making it a transitional fossil and further reinforcing this idea. [5]
Doliolidae is a family of tunicates in the order Doliolida.Members of the family are pelagic and often found far away from coastlines. [1]Members of the family are transparent, gelatinous, barrel-shaped or cylindrical marine organisms.
Ethel Johnson, former residential school student of the Shubenacadie school in Nova Scotia, illustrates her younger sister's struggles eating the unpalatable food served at the school: And she couldn't eat it, and she started crying. And then she tried to make her eat it; and she couldn't. And then she threw up, and then she put her face in there.
The School and university projects page collects information about Wikipedia projects for school and university classes, including an archive of many past class projects. Lists of current classes (and other programs) using Wikipedia can be found at dashboard.wikiedu.org and outreachdashboard.wmflabs.org , as well as below at current projects .
The mission project is commonly assigned to California elementary school students in the fourth grade when they are first learning about their state's Spanish missions. Students are assigned one of the 21 Spanish missions in California and have to build a diorama out of common household objects such as popsicle sticks , sugar cubes, papier ...
The type species is Leedsichthys problematicus. Leedsichthys fossils have been found in England, France, Germany and Chile. In 1999, based on the Chilean discoveries, a second species was named Leedsichthys notocetes, but this was later shown to be indistinguishable from L. problematicus.
Phyllonotus superbus problematicus Lan, 1981 (original combination) Chicomurex superbus , the superb murex , is a species of sea snail , a marine gastropod mollusk in the family Muricidae , the murex snails or rock snails.