burgess shale-type preservation and the animal evolution across the cambrian/precambrian boundary by...
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BURGESS SHALE-TYPE PRESERVATION BURGESS SHALE-TYPE PRESERVATION
ANDAND THE ANIMAL EVOLUTION ACROSS THE THE ANIMAL EVOLUTION ACROSS THE CAMBRIAN/PRECAMBRIAN BOUNDARYCAMBRIAN/PRECAMBRIAN BOUNDARY
by
(Alex) Jih-Pai Lin
Acknowledgements
• William I. Ausich, Loren E. Babcock and James St. John, Derek Briggs, and Sam Gon, III in USA; Yuan-Long Zhao, You-Yi Yu, Wang Yue, Jing Peng, Yuan Jin-Liang, and Shi-Xue Hu in China; Andrew Scott in UK; Chai-Wei Li and Hung-Jen Wu in Taiwan; and James G. Gehling in Australia.
• My graduate studies were supported by the Presidential Fellowship, Early-Start Fellowship, Ying-Chien Chang Fund, Graduate Student Ravel Grants, Alumni Research Grant from OSU, Student Research Grant and Gould Grant in Aid from PS, NSF East Asia Summer Research Fellowship, and two GSA Graduate Student Research Grants.
Why Study Fossils?
• Biostratigraphy
• Evolution
• Paleoecology
• Paleogeography
• Simple fascination
Source: Prothero, D. R. 1998. Bring Fossils to Life: An Introduction to Paleobiology, 1st ed. McGraw-Hill, Boston, 457 p.
Presentation Sections• Visited localities of exceptional preservation
– Mistaken Point Biota, Newfoundland– Ediacara Biota, South Australia– Chengjiang Biota, Yunnan, China– Emu Bay Shale Biota, Kangaroo Island, Australia– Kaili Biota, Guizhou, China– Burgess Shale Biota, western Canada
• Significance of Kaili Biota– New mode of preservation
Visited Deposits of Exceptional Preservation around the World
Mistaken Point Biota, Newfoundland, Canada
Narbonne et al., 2005
Narbonne et al., 2005
Visited Deposits of Exceptional Preservation around the World
Ediacara Biota, Flinders Range, South Australia
Gehling, 2005
Gehling, 2005
Gehling, 2005
Visited Deposits of Exceptional Preservation around the World
Chengjiang Biota, Yunnan Province, South China
Hou et al., 2004
Visited Deposits of Exceptional Preservation around the World
Emu Bay Shale, Kangaroo Island, South Australia
Jago & Zang, 2006
Visited Deposits of Exceptional Preservation around the World
Kaili Biota, Guizhou Province, South China
Kaili Biota – Arthropods
http://hdl.handle.net/1811/24227
Kaili Biota – Echinoderms
http://hdl.handle.net/1811/24227
Kaili Biota – Other Groups
http://hdl.handle.net/1811/24227
Kaili Biota – Trace Fossils
http://hdl.handle.net/1811/24227
Burgess Shale Biota
• Preservation of nonmineralizing organisms
• Preservation of soft parts
Visited Museum Collections
• Smithsonian National Museum of Natural History
• Carnegie Museum of Natural History
• Yale Peabody Museum of Natural History
• Oxford Museum of Natural History
Caron & Jackson, 2006
Caron & Jackson, 2006
New Mode of Preservation from the Kaili Biota
Summary of Burgess Shale-type Preservation
• Organic carbon films
• Replication of clay minerals
• Pyritization
• Phosphatization
Clusters of Silicified Spheroids
Elemental Mappings
Synchrotron X-ray Microscopy
• Facility: National Synchrotron Radiation Research Center (NSRRC), Taiwan
• Advantage: Synchrotron X-ray provides the highest possible image resolution
• Collaborators: Chai-Wei Li and Hung-Jeng Wu (National Tsinghua University)
Summary• Kaili egg clusters formed via selective
silicification probably occurred in low pH and high solubility conditions.
(Blatt, 1992)
• 1997: Freshman Fee Remission Scholarship
• 1998: July 4th weekend field trip to Nevada
• 1999: Laurentia ’99
• 2001: Teaching assistantship at The Ohio State University
Important steps that had led to my early career in paleontology…