However, Language is the most outstanding element that shows that the Mississippian culture had permanent settlements becuase after their establiment and Mississippian way of life had changed due to the arriver of the new comer( europeans), most of their ways of life had been tramped on but most of them were able to …

Then, Climate Change Destroyed It : The Salt The Mississippian American Indian culture rose to power after A.D. 900 by farming corn. Now, new evidence suggests a dramatic change in climate might have led to the culture’s collapse in the 1300s.

How did slavery most likely contribute to the end of Mississippian civilizations? Settlements shrank as American Indians were enslaved. many natives were enslaved or killed from diseases.

You found out the the Mississippian Period was 360 to 325 million years ago. Move head 3 spaces. You found out that Geologists in the U.S. divided the Carboniferous into 2 periods called the Mississippian Period & the Pennsylvanian Period!

The Mississippians lived in towns led by chiefs, not in cities ruled by kings and queens. Burial mounds served as monuments to high-ranking families, but mounds were built for other purposes as well. Many mounds are flat-topped platforms of earth; most are less than 10 feet high, but some are larger.

Paleozoic Era

During the Mississippian Period, shallow seas covered much of North America. This period is sometimes called the “Age of Crinoids” because the fossils of these invertebrates are major components of much Mississippian-age limestone. Also noteworthy in this period is the first appearance of amphibians.

One major event that happened during the period is the super continent, Gondwana, collided with Euromerica to start the formation of the Appalachian Mountains and other mountains in southern Europe. The Mississippian Period was named after the Mississippi River Valley, which was cover in rocks from the age.

The Mississippian is so named because rocks with this age are exposed in the Mississippi Valley. The Mississippian was a period of marine transgression in the Northern Hemisphere: the sea level was so high that only the Fennoscandian Shield and the Laurentian Shield were dry land.

Cenozoic

Pennsylvanian Subperiod, second major interval of the Carboniferous Period, lasting from 323.2 million to 298.9 million years ago.

A major marine extinction event, caused by a drop in sea level that hit ammonoids and crinoids especially hard, distinguishes the Mississippian from the Pennsylvanian periods in marine deposits.

Common Mississippian fossils found in Kentucky include corals (Cnidaria), bryozoans, brachiopods, trilobites, snails (gastropods), clams (pelecypods), squid-like animals (cephalopods), crinoids and blastoids (echinoderms), fish teeth (Pisces), and microscopic animals like ostracodes and conodonts.

The arthrodires (armoured, jawed fish) became extinct almost immediately in the Mississippian, while both the chondrichthians (cartilage skeleton) and osteichthians (bony skeleton) are represented throughout the Carboniferous.

Early in the Carboniferous Period, Earth’s climate was warm. Later, glaciers formed at the poles, while equatorial regions were often warm and humid. Earth’s climate became similar to today’s, shifting between glacial and interglacial periods.

Carboniferous coal was produced by bark-bearing trees that grew in vast lowland swamp forests. The growth of these forests removed huge amounts of carbon dioxide from the atmosphere, leading to a surplus of oxygen. Atmospheric oxygen levels peaked around 35 percent, compared with 21 percent today.

The earliest period in which humans could live as a land-based rather than a coastal species would be the Devonian (419-358 MYA) or the Carboniferous (358-298 MYA) eras, during which land-based life spread out and became established.

Coal forests continued after the Carboniferous rainforest collapse. These plant fossils are from one of those forests from about 5 million years after the CRC. However, the composition of the forests changed from a lepidodendron-dominated forest to one of predominantly tree ferns and seed ferns.

Land animals included primitive amphibians, reptiles (which first appeared in the Upper Carboniferous), spiders, millipedes, land snails, scorpions, enormous dragonflies, and more than 800 kinds of cockroaches.

By the end of the Carboniferous, reptiles had migrated well toward the interior of Pangea. These early pioneers went on to spawn the archosaurs, pelycosaurs, and therapsids of the ensuing Permian period. (It was the archosaurs that went on to spawn the first dinosaurs nearly a hundred million years later.)

When the Devonian period dawned about 416 million years ago the planet was changing its appearance. The great supercontinent of Gondwana was headed steadily northward, away from the South Pole, and a second supercontinent began to form that straddled the Equator.

The causes of these extinctions are unclear. Leading hypotheses include changes in sea level and ocean anoxia, possibly triggered by global cooling or oceanic volcanism. The impact of a comet or another extraterrestrial body has also been suggested, such as the Siljan Ring event in Sweden.

419.2 (+/- 3.2) million years ago

The powerful jaws were deadly to other fish, sharks and even other Dunkleosteus. Sharks, or Chondricthyes, developed during the Devonian also.

The “age of fish” is technically called the Devonian period. It lasted from 419 to 359 million years ago.

Ichthyostega

The Devonian Period is sometimes called the “Age of Fishes” because of the diverse, abundant, and, in some cases, bizarre types of these creatures that swam Devonian seas. Forests and the coiled shell-bearing marine organisms known as ammonites first appeared early in the Devonian.

The period is named after Devon, a county in southwestern England, where a controversial argument in the 1830s over the age and structure of the rocks found distributed throughout the county was eventually resolved by the definition of the Devonian period in the geological timescale.

Paleozoic

The first tetrapods — land-living vertebrates — appeared during the Devonian, as did the first terrestrial arthropods, including wingless insects and the earliest arachnids. In the oceans, brachiopods flourished. Crinoids and other echinoderms, tabulate and rugose corals, and ammonites were also common.