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In Spring, 1965 a major discovery of Devonian fossils occurred in Cuyahoga County. A collaboration between the state Highway Department , Ohio Bureau of Public Roads and the Cleveland Museum of Natural History led by the Smithsonian 's David Dunkle uncovered as many as 50,000 fish fossils from a construction site, including giant species like ...
The majority of cephalopods do not provide parental care to their offspring, except, for example, octopus, which helps this organism increase the survival rate of their offspring. [109] Marine species' life cycles are affected by various environmental conditions. [ 110 ]
Interpretations by Engeser (1996–1998) suggests that nautiloids, and indeed cephalopods in general, should be split into two main clades: Palcephalopoda (including all the nautiloids except Orthocerida and Ascocerida) and Neocephalopoda (the rest of the cephalopods). Palcephalopoda is meant to correspond to groups which are closer to living ...
The cephalopods have a long geological history, with the first nautiloids found in late Cambrian strata. [1]The class developed during the middle Cambrian, and underwent pulses of diversification during the Ordovician period [2] to become diverse and dominant in the Paleozoic and Mesozoic seas.
Cephalopods of North America — a primarily prehistoric class of Molluscs in North America. With some extant/surviving Holocene/present day species. Subcategories.
Ohio skies are filled this time of year with hundreds of species of birds flying north for the summer.. The height of the spring migration — known as The Biggest Week in American Birding — is ...
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Osbornoceras is a genus of Lower Silurian cyrtoconic nautiloid cephalopods known from Ohio and possibly Manitoba, one of five general currently included in the oncocerid family Karoceratidae. Diagnosis -morphology