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The marine life of Ohio included crinoids, snails, cephalopods, brachiopods, and fishes. Trilobites were also present, but their fossils are rare. [4] By the Permian period the sea had left completely. Local bodies of water were then lakes and rivers rather than saltwater. [3] Southeastern Ohio was a swamp-covered coastal plain. [4]
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 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 ]
The hemolymph, pericardial fluid and urine of cephalopods, including the common octopus, are all isosmotic with each other, as well as with the surrounding sea water. [36] It has been suggested that cephalopods do not osmoregulate , which would indicate that they are conformers. [ 36 ]
Ohio may only be a tiny blip on the map for some of them, like the blackpoll warbler — these tiny creatures fly nearly 2,000 miles every spring, from Argentina to Canada.
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.
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 ...
The general guideline has been to wait until Mother's Day in May to plant. Early spring isn't the best time to plant, according to the Ohio Valley Group, mainly because of the threat of frost ...