Gourt > Science > Earth Sciences > Paleontology > By Geological Interval > Paleozoic (8)
The Paleozoic Era is a major division of the geologic timescale, one of four geologic eras. The division of time into eras, the largest division of geologic time, dates back to Giovanni Arduino in the 18th century, although his original name for the era now called the Paleozoic was "Primitive" (see Tertiary). The word paleozoic comes from the Greek words palaio (old) and zoion (animals) and means "ancient life."
Periods of the Paleozoic Era
The Paleozoic includes six geologic periods; from oldest to youngest they are: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. It extended from roughly 542 MYA to roughly 251 MYA (ICS, 2004). It follows the Precambrian Era and is followed by the Mesozoic Era.
Paleozoic life
The Paleozoic covers the time from the first appearance of abundant, hard-shelled fossils to the time when the continents were beginning to be dominated by large, relatively sophisticated reptiles and relatively modern plants. The lower (oldest) boundary was classically set at the first appearance of creatures known as trilobites and archeocyathids. The upper (youngest) boundary is set at a major extinction event 300 million years later, known as the Permian extinction. Modern practice sets the older boundary at the first appearance of a distinctive trace fossil called Trichophycus pedum. More on [ Paleozoic ]
Trilobites :: Arthropods
Graptolites :: Invertebrates
Photo: Creativity Contest #348 Given the t-shirt Paleozoic Park, create funnier phrases for this t-shirt.... http://tumblr.com/xwq4s3f5g
kpbarbee (kpbarbee) Fri, 18 Dec 2009 16:21:12 -0000
Photo: Creativity Contest #348 Given the t-shirt Paleozoic Park, create funnier phrases for this t-shirt.... http://tumblr.com/xwq4s3f5g
birds, don't you know it is 10 degrees this morning?!
paleozoic (Rachel Reed) Fri, 18 Dec 2009 14:30:38 -0000
birds, don't you know it is 10 degrees this morning?!
@lights Why thank you! (that happens to be me, btw) Just chillin with ma paleozoic pals :D
curtoconnor (Curtis O'Connor) Thu, 17 Dec 2009 22:26:01 -0000
@lights Why thank you! (that happens to be me, btw) Just chillin with ma paleozoic pals :D
@paleozoic haha that's awesome
upbisb (upbisb) Thu, 17 Dec 2009 21:56:49 -0000
@paleozoic haha that's awesome
today, the doctor told me i am in the 'peanut category' of size.
paleozoic (Rachel Reed) Thu, 17 Dec 2009 21:47:39 -0000
today, the doctor told me i am in the 'peanut category' of size.
@HalSparks Paleozoic era! Unless the Permian-Triassic Extinction Event is considered war....
Turnbull85 (Katelyn Barnes) Thu, 17 Dec 2009 06:25:20 -0000
@HalSparks Paleozoic era! Unless the Permian-Triassic Extinction Event is considered war....
The Paleozoic - An overview of the era from the Ordovician Period to the Permian, with maps and timelines.
The Paleozoic Era - An overview of the era from the UC Berkeley Museum of Paleontology.
The Paleozoic Era - An illustrated geological timeline.
Meta Description: [ BobAinsworth.com - The Palaeozoic Era. An illustrated geological time line for the Palaeozoic era, which includes the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian periods. ]
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