J. Schopf

Publications179
h-index56
Citations12,107
Highly Influential Citations915
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Microfossils of the Early Archean Apex Chert: New Evidence of the Antiquity of Life
  • J. Schopf
  • Biology, Medicine
  • Science
  • 30 April 1993
TLDR
It is established that trichomic cyanobacterium-like microorganisms were extant and morphologically diverse at least as early as ∼3465 million years ago and suggests that oxygen-producing photoautotrophy may have already evolved by this early stage in biotic history. Expand
Early Archean (3.3-billion to 3.5-billion-year-old) microfossils from Warrawoona Group, Australia.
Cellularly preserved filamentous and colonial fossil microorganisms have been discovered in bedded carbonaceous cherts from the Early Archean Apex Basalt and Towers Formation of northwestern Western… Expand
Fossil evidence of Archaean life
  • J. Schopf
  • Geology, Medicine
  • Philosophical Transactions of the Royal Society B…
  • 29 June 2006
TLDR
Compilations support the view that life's existence dates from more than or equal to 3500 Myr ago. Expand
Microflora of the Bitter Springs Formation, late Precambrian, central Australia
Thirty new species, representing 24 new genera, of green algae, blue-green algae, colonial bacteria, fungus-like filaments, and possible pyrrophytes, are described from the bedded carbonaceous cherts… Expand
Laser–Raman imagery of Earth's earliest fossils
TLDR
This work applies laser–Raman spectroscopic imagery of individual microscopic fossils to exceptionally ancient fossil microbe-like objects, including the oldest such specimens reported from the geological record, and shows that the results obtained substantiate the biological origin of the earliest cellular fossils known. Expand
Evidence of Archean life: Stromatolites and microfossils
Abstract Fossil evidence of the existence of life during the Archean Eon of Earth history (>2500 Ma) is summarized. Data are outlined for 48 Archean deposits reported to contain biogenic… Expand
The Fossil Record: Tracing the Roots of the Cyanobacterial Lineage
TLDR
Mutually reinforcing lines of evidence indicate that stromatoliticmicrobial ecosystems, evidently including cyanobacteria and other members of the bacterial domain, were extant ~3500 Ma ago; methanogenic archaeans by ~2800 Ma lately; and Gram-negative sulfate-reducing bacteria at least as early as ~2700Ma ago. Expand
The Proterozoic biosphere : a multidisciplinary study
List of contributors Preface Part I: 1. Geology and paleobiology of the Archean Earth 2. Geological evolution of the Proterozoic Earth 3. Proterozoic biochemistry 4. Proterozoic atmosphere and ocean… Expand
Filamentous fossil bacteria from the Archean of Western Australia
Abstract Four morphotypes of structurally preserved, filamentous fossil bacteria have been discovered in petrographic thin sections of laminated, carbonaceous cherts from the ∼3500 Ma-old Warrawoona… Expand
Cradle of Life: The Discovery of Earth's Earliest Fossils
One of the greatest mysteries in reconstructing the history of life on Earth has been the apparent absence of fossils dating back more than 500 million years. We have long known that fossils of… Expand
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