Search results
Results from the WOW.Com Content Network
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]
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.
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 ...
A fairly uncommon but widespread American species found throughout "Richmondian" strata in Ohio, [17] [18] Kentucky, Indiana, [17] and Illinois. [16] Originally known as Endoceras inaequabile. [16] Cameroceras inopinatum [19] Stauffer 1937: Lower Ordovician A tiny species (diameter ~ 1 cm) from the Shakopee Dolomite of Minnesota. [19 ...
The majority of birds that migrate through Ohio each spring will do so in May. "Then in June, we see the stragglers," Emmert said. Cuckoos are one of the most common species that tend to fly ...
San Antonio Springs (also known as the Blue Hole) is a cluster of springs in Bexar County, Texas. These springs provide a large portion of the water for the San Antonio River, which flows from San Antonio to the Gulf of Mexico. The San Pedro Springs also feed into the San Antonio River.
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 ...
Pages in category "Cephalopods described in 1990" The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes. A.