Richard J. Twitchett

9.9k total citations · 2 hit papers
99 papers, 7.8k citations indexed

About

Richard J. Twitchett is a scholar working on Paleontology, Atmospheric Science and Oceanography. According to data from OpenAlex, Richard J. Twitchett has authored 99 papers receiving a total of 7.8k indexed citations (citations by other indexed papers that have themselves been cited), including 77 papers in Paleontology, 39 papers in Atmospheric Science and 31 papers in Oceanography. Recurrent topics in Richard J. Twitchett's work include Paleontology and Stratigraphy of Fossils (74 papers), Geology and Paleoclimatology Research (39 papers) and Marine Biology and Ecology Research (28 papers). Richard J. Twitchett is often cited by papers focused on Paleontology and Stratigraphy of Fossils (74 papers), Geology and Paleoclimatology Research (39 papers) and Marine Biology and Ecology Research (28 papers). Richard J. Twitchett collaborates with scholars based in United Kingdom, United States and Australia. Richard J. Twitchett's co-authors include Paul B. Wignall, Michael J. Benton, Thomas J. Algeo, Kliti Grice, Silvia Danise, Cindy V. Looy, William J. Foster, Michael E. Böttcher, Henk Visscher and Margaret L. Fraiser and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and Nature Communications.

In The Last Decade

Richard J. Twitchett

99 papers receiving 7.5k 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.

Oceanic Anoxia and the End Permian Mass Extinction

1996 956 citations Paul B. Wignall, Richard J. Twitchett Science profile →
Photic Zone Euxinia During the Permian-Triassic Superanoxic Event

2005 663 citations Michael E. Böttcher, Richard J. Twitchett et al. Science profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Richard J. Twitchett United Kingdom	45	6.3k	2.3k	2.0k	1.6k	1.6k	99	7.8k
Rachel Wood United Kingdom	43	4.6k 0.7×	1.8k 0.8×	1.6k 0.8×	1.4k 0.8×	1.4k 0.8×	136	6.1k
Thomas Servais France	39	5.5k 0.9×	3.5k 1.5×	1.0k 0.5×	1.4k 0.8×	1.9k 1.2×	201	7.1k
Axel Munnecke Germany	35	4.4k 0.7×	2.5k 1.1×	1.1k 0.6×	1.2k 0.7×	1.0k 0.6×	158	5.2k
Xunlai Yuan China	48	6.4k 1.0×	3.4k 1.5×	1.8k 0.9×	1.7k 1.0×	1.2k 0.7×	133	7.4k
Elisabetta Erba Italy	48	6.6k 1.0×	4.9k 2.1×	1.8k 0.9×	2.6k 1.6×	1.1k 0.7×	150	8.4k
Christoph Korte Denmark	35	5.5k 0.9×	3.2k 1.4×	2.2k 1.1×	2.6k 1.6×	631 0.4×	96	6.9k
Helmut Weissert Switzerland	51	6.5k 1.0×	4.1k 1.8×	1.6k 0.8×	2.6k 1.6×	786 0.5×	121	8.0k
Maoyan Zhu China	55	9.3k 1.5×	4.0k 1.7×	3.6k 1.8×	2.8k 1.7×	1.8k 1.1×	201	10.6k
Kunio Kaiho Japan	41	3.4k 0.5×	2.6k 1.1×	1.1k 0.6×	1.3k 0.8×	1.1k 0.7×	123	4.9k
Jinnan Tong China	48	6.3k 1.0×	1.8k 0.8×	2.4k 1.2×	2.3k 1.4×	665 0.4×	131	6.9k

Countries citing papers authored by Richard J. Twitchett

Since Specialization

Citations

This map shows the geographic impact of Richard J. Twitchett'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 Richard J. Twitchett with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Richard J. Twitchett more than expected).

Fields of papers citing papers by Richard J. Twitchett

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Richard J. Twitchett. 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 Richard J. Twitchett. The network helps show where Richard J. Twitchett may publish in the future.

Co-authorship network of co-authors of Richard J. Twitchett

This figure shows the co-authorship network connecting the top 25 collaborators of Richard J. Twitchett. A scholar is included among the top collaborators of Richard J. Twitchett 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 Richard J. Twitchett. Richard J. Twitchett 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

Witts, James D., et al.. (2025). The evolution of bone-eating worm diversity in the Upper Cretaceous Chalk Group of the United Kingdom. PLoS ONE. 20(4). e0320945–e0320945. 2 indexed citations

Foster, William J., Arnaud Brayard, Anja B. Frank, et al.. (2022). Palaeoecology of the Hiraiso Formation (Miyagi Prefecture, Japan) and implications for the recovery following the end-Permian mass extinction. PeerJ. 10. e14357–e14357. 3 indexed citations

Twitchett, Richard J., et al.. (2022). Bivalve body-size distribution through the Late Triassic mass extinction event. Paleobiology. 48(3). 420–445. 6 indexed citations

Slater, Sam M., Paul R. Bown, Richard J. Twitchett, Silvia Danise, & Vivi Vajda. (2022). Global record of “ghost” nannofossils reveals plankton resilience to high CO ₂ and warming. Science. 376(6595). 853–856. 31 indexed citations

Danise, Silvia, Marie-Émilie Clémence, Gregory D. Price, et al.. (2019). Stratigraphic and environmental control on marine benthic community change through the early Toarcian extinction event (Iberian Range, Spain). Palaeogeography Palaeoclimatology Palaeoecology. 524. 183–200. 41 indexed citations

Twitchett, Richard J., et al.. (2018). Salinity changes and anoxia resulting from enhanced run-off during the late Permian global warming and mass extinction event. Climate of the past. 14(4). 441–453. 24 indexed citations

Foster, William J., Silvia Danise, Gregory D. Price, & Richard J. Twitchett. (2018). PALEOECOLOGICAL ANALYSIS OF BENTHIC RECOVERY AFTER THE LATE PERMIAN MASS EXTINCTION EVENT IN EASTERN LOMBARDY, ITALY. Palaios. 33(6). 266–281. 14 indexed citations

Johnson, Kenneth G., et al.. (2017). USING MUSEUM COLLECTIONS TO STUDY BRACHIOPOD SIZE CHANGE ACROSS EXTINCTION BOUNDARIES - TAKING ADVANTAGE OF MASS DIGITISATION. Abstracts with programs - Geological Society of America. 1 indexed citations

Underwood, Charlie J., et al.. (2017). Ecological impact of the end-Cretaceous extinction on lamniform sharks. PLoS ONE. 12(6). e0178294–e0178294. 33 indexed citations

10.

Foster, William J., Silvia Danise, & Richard J. Twitchett. (2016). A silicified Early Triassic marine assemblage from Svalbard. Journal of Systematic Palaeontology. 15(10). 851–877. 48 indexed citations

11.

Danise, Silvia, Richard J. Twitchett, & Crispin T. S. Little. (2015). Environmental controls on Jurassic marine ecosystems during global warming. Geology. 43(3). 263–266. 77 indexed citations

12.

Oji, Tatsuo & Richard J. Twitchett. (2015). The Oldest Post-Palaeozoic Crinoid and Permian-Triassic Origins of the Articulata (Echinodermata). ZOOLOGICAL SCIENCE. 32(2). 211–215. 20 indexed citations

13.

Danise, Silvia, Richard J. Twitchett, Crispin T. S. Little, & Marie-Émilie Clémence. (2013). The Impact of Global Warming and Anoxia on Marine Benthic Community Dynamics: an Example from the Toarcian (Early Jurassic). PLoS ONE. 8(2). e56255–e56255. 92 indexed citations

14.

Price, Gregory D., Richard J. Twitchett, James R. Wheeley, & Giuseppe Buono. (2013). Isotopic evidence for long term warmth in the Mesozoic. Scientific Reports. 3(1). 1438–1438. 63 indexed citations

15.

Algeo, Thomas J., Zhong‐Qiang Chen, Margaret L. Fraiser, & Richard J. Twitchett. (2011). Terrestrial–marine teleconnections in the collapse and rebuilding of Early Triassic marine ecosystems. Palaeogeography Palaeoclimatology Palaeoecology. 308(1-2). 1–11. 277 indexed citations

16.

Twitchett, Richard J., et al.. (2009). Biogeochemically cycling of C, S, H across the P/Tr boundary in Spitsbergen. Geochimica et Cosmochimica Acta Supplement. 73. 1 indexed citations

17.

Twitchett, Richard J., et al.. (2009). Fluctuations in the body size of marine invertebrates through the Pliensbachian–Toarcian extinction event. Palaeogeography Palaeoclimatology Palaeoecology. 284(1-2). 29–38. 63 indexed citations

18.

Chen, Zhong‐Qiang, Richard J. Twitchett, & Jinnan Tong. (2009). Permian–Triassic mass extinction and subsequent recovery: an update. Australian Journal of Earth Sciences. 56(6). 741–744. 3 indexed citations

19.

Twitchett, Richard J., et al.. (2001). Rapid and synchronous collapse of marine and terrestrial ecosystems during the end-Permian biotic crisis. Geology. 29(4). 351–351. 284 indexed citations

20.

Wignall, Paul B. & Richard J. Twitchett. (1999). Unusual intraclastic limestones in Lower Triassic carbonates and their bearing on the aftermath of the end‐Permian mass extinction. Sedimentology. 46(2). 303–316. 101 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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