Permian Forests

The latest issue of Discover magazine has an article about an entire fossilized swamp forest discovered buried under volcanic ash in Mongolia. It’s worth a look. When you find interesting articles, you should write a post about them to share with the class.

New ancient earth

ALERT : CLONING COMING SOON. NEW AND IMPROVED HABITATS/ORGANISMS

Earth Science e-Text

Electronic versions of the text and study guides will be available here shortly.

Chemistry Chapter 1

Jeopardy for Chapter 1

Chemistry review study guide

Comparing Two Projects

Both these projects stood out. Each in its own way.

Triassic Period movie and soundtrack. Click to launch.

Carboniferous and Cambrian Period
Plate Tectonics and Paleoclimatology:

Contemporary Climatogy and Geography:

Competitive Analysis:

Jurassic Period

Here are some VoiceThreads from the Jurassic Period. Take a look!

tertiary period

the climate begins cool…..eventully gets hotter……and cools back down again….also has an effect with the animal evolution

Voice thread…

how are we supposed to put the information on voicethread??  like do we type it on microsoft word then upload it??

The Pleistocene

1.8 million to ~10,000 years ago
This mammoth, found in deposits in Russia, was one of the largest land mammals of the Pleistocene, the time period that spanned from 1.8 million to ~10,000 years ago. Pleistocene biotas were extremely close to modern ones — many genera and even species of Pleistocene conifers, mosses, flowering plants, insects, mollusks,birds, mammals, and others survive to this day. Yet the Pleistocene was also characterized by the presence of distinctive large land mammals and birds. Mammoths and their cousins the mastodons, longhorned bison, sabre-toothed cats, giant ground sloths, and many other large mammals characterized Pleistocene habitats in North America, Asia, and Europe. Native horses and camels galloped across the plains of North America. Great teratorn birds with 25-foot wingspans stalked prey. Around the end of the Pleistocene, all these creatures went extinct (the horses living in North America today are all descendants of animals brought from Europe in historic times).
It was during the Pleistocene that the most recent episodes of global cooling, or ice ages, took place. Much of the world’s temperate zones were alternately covered by glaciers during cool periods and uncovered during the warmer interglacial periods when the glaciers retreated. Did this cause the Pleistocene extinctions? It doesn’t seem likely; the large mammals of the Pleistocene weathered several climate shifts.
The Pleistocene also saw the evolution and expansion of our own species, Homo sapiens, and by the close of the Pleistocene, humans had spread through most of the world. According to a controversial theory, first proposed in the 1960s, human hunting around the close of the Pleistocene caused or contributed to the extinction of many of the Pleistocene large mammals. It is true that the extinction of large animals on different continents appears to correlate with the arrival of humans, but questions remain as to whether early human hunters were sufficiently numerous and technologically advanced to wipe out whole species. It has also been hypothesized that some disease wiped out species after species in the Pleistocene. The issue remains unsolved; perhaps the real cause of the Pleistocene extinction was a combination of these factors.
Many paleontologists study Pleistocene fossils in order to understand the climates of the past. The Pleistocene was not only a time during which climates and temperatures shifted dramatically; Pleistocene fossils are often abundant, well-preserved, and can be dated very precisely. Some, such as diatoms, foraminifera, and plant pollen, are both abundant and highly informative about paleoclimates. Today, there is concern about future climate change (e.g. global warming) and how it will affect us. Paleontologists who work on Pleistocene fossils are providing a growing amount of data on the effect of climate change on the Earth’s biota, making it possible to understand the effects of future climate change.

Dinosaur Timeline Gallery

This website was useful in finding information on the animals that lived during different time periods in history. If you go to the “dinosaur timeline gallery” link on the side it lists all the time periods and the animals that existed during that time.