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Transcript of Devonian Period
World's Life= 383 1/3 Strand of spaghetti
world's life= 12 bowls of a proper serving of spaghetti
Proper serving: 32 strands of spaghetti= 1 bowl
Or 2.61 * 10^-3%
The Devonian Period
By: Anjali Bhatt and Huda Maloum
The age of:
Overview/ interesting facts:
Named after Devonshire, England
age of fishes-Marine life
animals going inland
forests (100 ft trees)
Ammonoids (octopi, squids...)
ferns, horsetails, and seed plants
The Lands are Moving!
Gondwana Land heads north
2nd Supercontinent forms at equator
americas, north europe, russia, greenland
Land surrounds south pole, runs up meridian
spreads east, modern day Indonesia
will clump near the meridian
Then break up
Lots of fish (up to 33ft)
Armored Placoderms- strong jaws
mollusks, libofins, tiktaalik (crocodile's ancestors)
lived in water, but went inland
Clean oceans/ good sunlight
lots of plant life (coral reefs)
Moved to land- no overpopulation
adapt to dryness on land
Create oxygen, animals thrived
Lots of huge coral reefs
Mainly marine creatures
Reef builders disappeared
Reduced atmospheric levels-greenhouse gas (CO2)
Major asteroid impact
re-glacialization of Gondwanaland
Super-continents collide-Mountain range
South Laurentia- Appalachians
East Baltica- ural
Baltica/North America- Acadian mountains
Britain/ Scandanavia- Caledonides
~Rhynie chert, Scotland- sedimentary deposit, fossils
~grand Canyon Rock Layer, Temple Butte
~red rock in this time period
~kaaterskill Falls, New york
~Pools- Mix manorkill/oneonta/ genesee sandstone
~corilleran area- sumberged in sea 4,000-6,000 ft
1) Glaciers melted
2) 1st Vascular Plant
3) Insects/Animals appear
4) Jawed fish
5) Reefs grew together
1) Room for marine life
2) Plants go to land (vascular- water from roots)
3) Lots of life
4) age of fishes
5) food source for marine life
The Silurian Period- Effects
1) Marine life- abundant
2) forests- oxygen
3) Tropical/humid climate
4) lots of forests
1) start with many animal variety
2) they had 35% oxygen in air, 2014 has 21%
3) suitable to sustain life
4) swamp forests and lots of coal
Bates, Nicholas R. "Biogeochemistry of Paleozoic Brachiopods." Digital Repository. Brock University, 7 Sept. 1989.
Web. 8 Sept. 2014. <http%3A%2F%2Fdr.library.brocku.ca%2Fhandle%2F10646%2F1785>.
"Devonian." HSU NHM. Humboldt State University, 29 Oct. 2012. Web. 08 Sept. 2014. <http://www.humboldt.edu/
"Devonian Period, Age of Fishes." National Geographic. National Geographic Society, n.d. Web. 07 Sept. 2014.
"Devonian Period." Infoplease. Pearson Education, n.d. Web. 7 Sept. 2014. <www.infoplease.com%2Fencylopedia
"Index Fossils." Geologic Time:. Publication Services, 28 July 1997. Web. 08 Sept. 2014. <http://pubs.usgs.gov/gip/
"Isotopes." Chemistry Tutorial :. AUS-e-TUTE, n.d. Web. 10 Sept. 2014. <http://www.ausetute.com.au/isotopes.html>.
"Kaaterskill Falls." NYfalls.com. Amazon.com, n.d. Web. 7 Sept. 2014. <http%3A%2F%2Fwww.nyfalls.com%2Fboard
"Radioactive Dating" 15 September 2009. HowStuffWorks.com. <http://science.howstuffworks.com/dictionary/
geology-terms/radioactive-dating-info.htm> 08 September 2014.
Ratkevich, Ron. "GEOLOGICAL HISTORY OF THE GRAND CANYON." GEOLOGICAL HISTORY OF THE GRAND CANYON. N.p., n.d. Web.
07 Sept. 2014. <http://www.t-rat.com/Pages/GeologicalHistGrandCanyon.html>.
Speer, Brian R. "The Devonian Period." UCMP Berkley. N.p., 1 July 2011. Web. 7 Sept. 2014. <www.ucmpberkley.edu
Stradley, Linda. "How To Control Portion Sizes, Take Control of Your Eating." What's Cooking America. Center for
Nutrition Policy and Promotion, United States Department of Agriculture, n.d. Web. 13 Sept. 2014. <http://whatscookingamerica.net/PortionControl.htm>.
"The Devonian Period: The Age of Fish." Fossils Facts and Finds.com. N.p., n.d. Web. 08 Sept. 2014.
"The Devonian Period." Palaeos Paleozoic: Devonian:. Ed. M. Alan Kazlev, Renato Santos, and Roger Perkins. N.p.,
n.d. Web. 07 Sept. 2014. <http://palaeos.com/paleozoic/devonian/devonian.htm>.
Tipper, Edward T. "The Isotopic Fingerprint." Ftp. Magdalene College University of Cambridge, 2006. Web. 8 Sept.
The Right Isotope:
Covered with Bryozoans (Moss Animals)- CALCIUm
10355 ppm (parts per million)-Magnesium
115mg become 89 Ca over time
Scientists also use (on this fossil)
Overview/ Interesting facts Cont.
eND OF SILURIAN/START OF DEVONIAN:
Small mass extinction
Melting of glaciers
End of the Devonian Period:
Sorry no spoilers
Fossils and teeth of sharks
STable and Unstable Isotopes