21![Crurotarsans / Chinle Formation / Saurischians / Petrified Forest National Park / Revueltosaurus / Aetosaur / Coelophysis / Phytosaur / Triassic / Herpetology / Mesozoic / Triassic dinosaurs Crurotarsans / Chinle Formation / Saurischians / Petrified Forest National Park / Revueltosaurus / Aetosaur / Coelophysis / Phytosaur / Triassic / Herpetology / Mesozoic / Triassic dinosaurs](/pdf-icon.png) | Add to Reading ListSource URL: www.nature.nps.govLanguage: English - Date: 2001-06-06 17:31:34
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22![REVIEW doi:[removed]nature09678 Has the Earth’s sixth mass extinction already arrived? REVIEW doi:[removed]nature09678 Has the Earth’s sixth mass extinction already arrived?](https://www.pdfsearch.io/img/967c87616b66381d58bf6027958463d3.jpg) | Add to Reading ListSource URL: ib.berkeley.eduLanguage: English - Date: 2011-03-02 23:54:03
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23![Proc. R. Soc. B[removed], 507–513 doi:[removed]rspb[removed]Published online 7 October 2008 A thin-shelled reptile from the Late Triassic of North America and the origin of the turtle shell Proc. R. Soc. B[removed], 507–513 doi:[removed]rspb[removed]Published online 7 October 2008 A thin-shelled reptile from the Late Triassic of North America and the origin of the turtle shell](https://www.pdfsearch.io/img/cef034bf9048d71a85dfc6404213d35e.jpg) | Add to Reading ListSource URL: www.nmnaturalhistory.orgLanguage: English - Date: 2014-06-06 05:23:16
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24![A RT I C L E S Methane Release from Igneous Intrusion of Coal during Late Permian Extinction Events Gregory J. Retallack and A. Hope Jahren1 Department of Geological Sciences, University of Oregon, Eugene, Oregon[removed] A RT I C L E S Methane Release from Igneous Intrusion of Coal during Late Permian Extinction Events Gregory J. Retallack and A. Hope Jahren1 Department of Geological Sciences, University of Oregon, Eugene, Oregon[removed]](https://www.pdfsearch.io/img/253ccac2349fd8c0724430d084b8c5e0.jpg) | Add to Reading ListSource URL: jahrenlab.comLanguage: English - Date: 2012-08-21 20:45:07
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25![Middle-Late Permian mass extinction on land Gregory J. Retallack† Christine A. Metzger Department of Geological Sciences, University of Oregon, Eugene, Oregon[removed], USA Tara Greaver Middle-Late Permian mass extinction on land Gregory J. Retallack† Christine A. Metzger Department of Geological Sciences, University of Oregon, Eugene, Oregon[removed], USA Tara Greaver](https://www.pdfsearch.io/img/d8af08847ff16f6788272ea3f82543ed.jpg) | Add to Reading ListSource URL: jahrenlab.comLanguage: English - Date: 2012-08-21 20:54:57
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26![MARTIN FORMATION LATE DEVONIAN (Frasnian) 374 to 367 Million Years Ago LITHOLOGY: MARTIN FORMATION LATE DEVONIAN (Frasnian) 374 to 367 Million Years Ago LITHOLOGY:](https://www.pdfsearch.io/img/648dc4e95755e14c59bc0bb21ced3f6c.jpg) | Add to Reading ListSource URL: www.westcarb.orgLanguage: English - Date: 2011-04-26 14:54:05
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27![(Fundy Gp., Argo & Eurydice Fms.) OR P HE US G R AB E N Figure 5: Simplified paleogeographic reconstruction of the Scotian Basin during the Late Triassic (Rhaetian) ca. 210 mya. Salt deposition likely was (Fundy Gp., Argo & Eurydice Fms.) OR P HE US G R AB E N Figure 5: Simplified paleogeographic reconstruction of the Scotian Basin during the Late Triassic (Rhaetian) ca. 210 mya. Salt deposition likely was](https://www.pdfsearch.io/img/baa33e2b51302a96c10901ee29c6e0a1.jpg) | Add to Reading ListSource URL: www.callforbids.cnsopb.ns.ca- Date: 2012-07-27 11:49:39
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28![(Fundy Gp., Argo & Eurydice Fms.) OR P HE US G R AB E N Figure 5: Simplified paleogeographic reconstruction of the Scotian Basin during the Late Triassic (Rhaetian) ca. 210 mya. Salt deposition likely was (Fundy Gp., Argo & Eurydice Fms.) OR P HE US G R AB E N Figure 5: Simplified paleogeographic reconstruction of the Scotian Basin during the Late Triassic (Rhaetian) ca. 210 mya. Salt deposition likely was](https://www.pdfsearch.io/img/ebd835c0c06ee2915c7fd779d0fb49e4.jpg) | Add to Reading ListSource URL: www.callforbids.cnsopb.ns.ca- Date: 2012-07-27 11:44:55
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29![(Fundy Gp., Argo & Eurydice Fms.) OR P HE US G R AB E N Figure 5: Simplified paleogeographic reconstruction of the Scotian Basin during the Late Triassic (Rhaetian) ca. 210 mya. Salt deposition likely was (Fundy Gp., Argo & Eurydice Fms.) OR P HE US G R AB E N Figure 5: Simplified paleogeographic reconstruction of the Scotian Basin during the Late Triassic (Rhaetian) ca. 210 mya. Salt deposition likely was](https://www.pdfsearch.io/img/1e0f2ad602c7985dc4405b68d1250527.jpg) | Add to Reading ListSource URL: www.callforbids.cnsopb.ns.ca- Date: 2012-07-27 11:41:00
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30![THE SOIL IS ALIVE! LOSS OF BIODIVERSITY NATURAL RATE OF EXTINCTION If the Earth was in equilibrium, the natural extinction rate (i.e. normal evolution) would be around 1 species for every million species per year. This THE SOIL IS ALIVE! LOSS OF BIODIVERSITY NATURAL RATE OF EXTINCTION If the Earth was in equilibrium, the natural extinction rate (i.e. normal evolution) would be around 1 species for every million species per year. This](https://www.pdfsearch.io/img/be9ebc90ee68f0e139591a8d789d7bf7.jpg) | Add to Reading ListSource URL: eusoils.jrc.ec.europa.euLanguage: English - Date: 2008-06-12 09:07:05
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