J. William Schopf

14.8k total citations · 2 hit papers
109 papers, 7.1k citations indexed

About

J. William Schopf is a scholar working on Paleontology, Atmospheric Science and Astronomy and Astrophysics. According to data from OpenAlex, J. William Schopf has authored 109 papers receiving a total of 7.1k indexed citations (citations by other indexed papers that have themselves been cited), including 66 papers in Paleontology, 37 papers in Atmospheric Science and 20 papers in Astronomy and Astrophysics. Recurrent topics in J. William Schopf's work include Paleontology and Stratigraphy of Fossils (64 papers), Geology and Paleoclimatology Research (37 papers) and Hydrocarbon exploration and reservoir analysis (19 papers). J. William Schopf is often cited by papers focused on Paleontology and Stratigraphy of Fossils (64 papers), Geology and Paleoclimatology Research (37 papers) and Hydrocarbon exploration and reservoir analysis (19 papers). J. William Schopf collaborates with scholars based in United States, Russia and China. J. William Schopf's co-authors include Anatoliy B. Kudryavtsev, Elso S. Barghoorn, Andrew D. Czaja, D. G. Agresti, Thomas J. Wdowiak, M. R. Walter, Stanley M. Awramik, Cornelis Klein, W. G. Meinschein and D. Z. Oehler and has published in prestigious journals such as Nature, Science and Proceedings of the National Academy of Sciences.

In The Last Decade

J. William Schopf

105 papers receiving 6.7k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Microfossils of the Early Archean Apex Chert: New Evidence of the Antiquity of Life

1993 819 citations J. William Schopf profile →
The Proterozoic Biosphere

1992 642 citations J. William Schopf, Donald R. Lowe et al. Cambridge University Press eBooks profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
J. William Schopf United States	48	3.7k	2.3k	1.4k	1.2k	1.2k	109	7.1k
Kenneth G. MacLeod United States	46	3.6k 1.0×	2.9k 1.2×	623 0.4×	734 0.6×	1.2k 1.0×	179	7.3k
Malcolm R. Walter Australia	37	3.2k 0.9×	1.9k 0.8×	696 0.5×	570 0.5×	1.3k 1.1×	84	5.1k
J. William Schopf United States	22	2.4k 0.6×	1.5k 0.7×	711 0.5×	551 0.4×	735 0.6×	43	4.1k
Stefan Bengtson Sweden	50	5.5k 1.5×	2.3k 1.0×	336 0.2×	881 0.7×	1.1k 0.9×	147	7.5k
David J. Des Marais United States	56	2.4k 0.6×	2.9k 1.3×	4.0k 2.8×	866 0.7×	1.4k 1.2×	128	11.1k
Woodward W. Fischer United States	55	5.2k 1.4×	3.4k 1.5×	1.3k 0.9×	1.4k 1.1×	1.8k 1.5×	202	10.3k
Bruce Runnegar United States	38	3.7k 1.0×	1.9k 0.8×	411 0.3×	440 0.4×	801 0.7×	93	5.2k
Nicholas J. Butterfield United Kingdom	48	5.2k 1.4×	2.8k 1.2×	229 0.2×	889 0.7×	839 0.7×	85	6.7k
Martin D. Brasier United Kingdom	39	3.8k 1.0×	2.3k 1.0×	552 0.4×	307 0.2×	1.3k 1.1×	76	5.0k
Walter Álvarez United States	40	2.8k 0.7×	3.1k 1.3×	1.6k 1.2×	849 0.7×	3.8k 3.2×	121	7.5k

Countries citing papers authored by J. William Schopf

Since Specialization

Citations

This map shows the geographic impact of J. William Schopf's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J. William Schopf with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. William Schopf more than expected).

Fields of papers citing papers by J. William Schopf

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. William Schopf. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J. William Schopf. The network helps show where J. William Schopf may publish in the future.

Co-authorship network of co-authors of J. William Schopf

This figure shows the co-authorship network connecting the top 25 collaborators of J. William Schopf. A scholar is included among the top collaborators of J. William Schopf based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with J. William Schopf. J. William Schopf is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Schopf, J. William. (2024). The microbial cataclysm that forever changed life’s history. SHILAP Revista de lepidopterología. 1. 100005–100005. 1 indexed citations

Garcia, Amanda K., J. William Schopf, Shin‐ichi Yokobori, Satoshi Akanuma, & Akihiko Yamagishi. (2017). Reconstructed ancestral enzymes suggest long-term cooling of Earth’s photic zone since the Archean. Proceedings of the National Academy of Sciences. 114(18). 4619–4624. 42 indexed citations

Garcia, Amanda K., et al.. (2016). RECONSTRUCTED ANCESTRAL ENZYMES SUGGEST THAT EARTH'S PHOTIC-ZONE TEMPERATURE MARKEDLY DECREASED OVER GEOLOGIC TIME. Abstracts with programs - Geological Society of America. 1 indexed citations

Schopf, J. William, et al.. (2013). Characterization of the stem anatomy of the Eocene fern Dennstaedtiopsis aerenchymata (Dennstaedtiaceae) by use of confocal laser scanning microscopy. American Journal of Botany. 100(8). 1626–1640. 13 indexed citations

Schopf, J. William, et al.. (2010). Molecular Chemistry, Cellular Anatomy, Taphonomy and Mode of Preservation of Ancient Rock-embedded Microscopic Fossils. LPICo. 1538. 5288. 1 indexed citations

Czaja, Andrew D., Anatoliy B. Kudryavtsev, George D. Cody, & J. William Schopf. (2008). Similar fossil ferns having dissimilar organic geochemical preservation. Geochimica et Cosmochimica Acta Supplement. 72(12).

Derenne, Sylvie, F. Robert, J. William Schopf, et al.. (2007). European Astrobiology Network Association 2006 Meeting EANA – European Astrobiology Network Association 16–18 October 2006 Lyon, France. International Journal of Astrobiology. 6(1). 59–87. 1 indexed citations

Chen, Junyuan, J. William Schopf, David J. Bottjer, et al.. (2007). Raman spectra of a Lower Cambrian ctenophore embryo from southwestern Shaanxi, China. Proceedings of the National Academy of Sciences. 104(15). 6289–6292. 70 indexed citations

Schopf, J. William. (2003). 3-D Raman Imagery and Atomic Force Microscopy of Ancient Microscopic Fossils. AGUFM. 2003. 2 indexed citations

10.

Schopf, J. William. (1999). Cradle of Life. Princeton University Press eBooks. 80 indexed citations

11.

Schopf, J. William. (1999). Deep Divisions in the Tree of Life--What Does the Fossil Record Reveal?. Biological Bulletin. 196(3). 351–355. 8 indexed citations

12.

Schopf, J. William. (1994). The early evolution of life: solution to Darwin's dilemma. Trends in Ecology & Evolution. 9(10). 375–377. 9 indexed citations

13.

Schopf, J. William, Donald R. Lowe, J. M. Hayes, et al.. (1992). The Proterozoic Biosphere. Cambridge University Press eBooks. 642 indexed citations breakdown →

14.

Schopf, J. William, et al.. (1984). Proterozoic stromatolitic microbiotas of the 1400–1500 Ma-old Gaoyuzhuang formation near Jixian, northern China. Precambrian Research. 24(3-4). 335–349. 12 indexed citations

15.

Schopf, J. William, et al.. (1974). Microorganisms from the Kalkberg Limestone (lower Devonian) of New York State. Journal of Paleontology. 48(1). 74–77. 10 indexed citations

16.

Schopf, J. William, et al.. (1973). On the development of metaphytes and metazoans. Journal of Paleontology. 47(1). 1–9. 58 indexed citations

17.

Fairchild, Thomas R., J. William Schopf, & Robert L. Folk. (1973). Filamentous algal microfossils form the Caballos Novaculite, Devonian of Texas. Journal of Paleontology. 47(5). 946–952. 13 indexed citations

18.

Schopf, J. William, Dorothy Z. Oehler, Robert J. Horodyski, & Keith A. Kvenvolden. (1971). Biogenicity and significance of the oldest known stromatolites. Journal of Paleontology. 45(3). 477–485. 51 indexed citations

19.

Schopf, J. William, et al.. (1971). New microorganisms from the Bitter Springs Formation (late Precambrian) of the north-central Amadeus Basin, Australia. Journal of Paleontology. 45(6). 925–960. 192 indexed citations

20.

Schopf, J. William & Elso S. Barghoorn. (1969). Microorganisms from the late Precambrian of South Australia. Journal of Paleontology. 43(1). 111–118. 41 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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