David A. T. Harper

29.8k total citations · 2 hit papers
364 papers, 26.0k citations indexed

About

David A. T. Harper is a scholar working on Paleontology, Atmospheric Science and Oceanography. According to data from OpenAlex, David A. T. Harper has authored 364 papers receiving a total of 26.0k indexed citations (citations by other indexed papers that have themselves been cited), including 282 papers in Paleontology, 141 papers in Atmospheric Science and 123 papers in Oceanography. Recurrent topics in David A. T. Harper's work include Paleontology and Stratigraphy of Fossils (268 papers), Geology and Paleoclimatology Research (141 papers) and Marine Biology and Ecology Research (108 papers). David A. T. Harper is often cited by papers focused on Paleontology and Stratigraphy of Fossils (268 papers), Geology and Paleoclimatology Research (141 papers) and Marine Biology and Ecology Research (108 papers). David A. T. Harper collaborates with scholars based in United Kingdom, Denmark and China. David A. T. Harper's co-authors include Paul D. Ryan, Øyvind Hammer, Thomas Servais, Rong Jiayu, Christian M. Ø. Rasmussen, Renbin Zhan, Alan W. Owen, Axel Munnecke, Emma U. Hammarlund and Xu Chen and has published in prestigious journals such as Nature, Science and Nature Communications.

In The Last Decade

David A. T. Harper

345 papers receiving 24.7k 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.

PAST: PALEONTOLOGICAL STATISTICAL SOFTWARE PACKAGE FOR EDUCATION AND DATA ANALYSIS

2001 16.7k citations David A. T. Harper et al. profile →
PAST: paleontological statistics software package for education and data analysis version 2.09

2001 516 citations David A. T. Harper et al. profile →

Peers

Countries citing papers authored by David A. T. Harper

Since Specialization

Citations

This map shows the geographic impact of David A. T. Harper'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 David A. T. Harper with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites David A. T. Harper more than expected).

Fields of papers citing papers by David A. T. Harper

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by David A. T. Harper. 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 David A. T. Harper. The network helps show where David A. T. Harper may publish in the future.

Co-authorship network of co-authors of David A. T. Harper

This figure shows the co-authorship network connecting the top 25 collaborators of David A. T. Harper. A scholar is included among the top collaborators of David A. T. Harper 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 David A. T. Harper. David A. T. Harper 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

#	Work	Indexed citations
1	A fossilized ventral ganglion reveals a chaetognath affinity for Cambrian nectocaridids 2025 ·Science Advances ·Jakob Vinther, Luke A. Parry, (unknown), (unknown), (unknown), Changkun Park, (unknown), (unknown), David A. T. Harper, Arne Thorshøj Nielsen, Tae‐Yoon S. Park	1
2	Cambrian explosion and Ordovician biodiversification or Cambrian biodiversification and Ordovician explosion? 2023 ·HAL (Le Centre pour la Communication Scientifique Directe) ·Thomas Servais, Borja Cascales‐Miñana, David A. T. Harper, Bertrand Lefèbvre, Bert Van Bocxlaer, Wenhui Wang	3
3	Changing palaeobiogeography during the Ordovician Period 2022 ·Geological Society London Special Publications ·Thomas Servais, David A. T. Harper, Björn Kröger, Christopher R. Scotese, Alycia L. Stigall, Yong Yi Zhen	9
4	An extraterrestrial trigger for the mid-Ordovician ice age: Dust from the breakup of the L-chondrite parent body 2019 ·Science Advances ·Birger Schmitz, Kenneth A. Farley, Steven Goderis, P. R. Heck, Stig M. Bergström, (unknown), Philippe Claeys, Vinciane Debaille, A. V. Dronov, Matthias Van Ginneken, David A. T. Harper, (unknown), Johan Friberg, Shiyong Liao, (unknown), M. M. M. Meier, Bernhard Peucker‐Ehrenbrink, (unknown), R. Wieler, Fredrik Terfelt	65
5	The Sirius Passet Lagerstätte of North Greenland: a remote window on the Cambrian Explosion 2019 ·Journal of the Geological Society ·David A. T. Harper, Emma U. Hammarlund, Timothy P. Topper, Arne Thorshøj Nielsen, Jan Audun Rasmussen, Tae‐Yoon S. Park, M. Paul Smith	44
6	Early Palaeozoic diversifications and extinctions in the marine biosphere: a continuum of change 2019 ·Geological Magazine ·David A. T. Harper, Borja Cascales‐Miñana, Thomas Servais	57
7	The Furongian (late Cambrian) Biodiversity Gap: Real or apparent? 2019 ·Palaeoworld ·David A. T. Harper, Timothy P. Topper, Borja Cascales‐Miñana, Thomas Servais, Yuandong Zhang, Per Ahlberg	51
8	Possible patterns of marine primary productivity during the Great Ordovician Biodiversification Event 2017 ·Lethaia ·Alexandre Pohl, David A. T. Harper, Yannick Donnadieu, Guillaume Le Hir, Élise Nardin, Thomas Servais	22
9	Multiple palaeokarst horizons in the Lower Palaeozoic of Baltoscandia challenging the dogma of a deep epicontinental sea 2012 ·EGUGA ·Oliver Lehnert, (unknown), Per Ahlberg, David A. T. Harper	7
10	Tectonics, islands and island hopping in the Early Palaeozoic benthos 2011 ·Scripta geologica ·David A. T. Harper, (unknown), Christian M. Ø. Rasmussen	1
11	The Neoproterozoic Drift History of Laurentia: a Critical Evaluation and new Palaeomagnetic Data from Northern and Eastern Greenland 2008 ·AGU Spring Meeting Abstracts ·Conall Mac Niocaill, (unknown), Svend Stouge, David A. T. Harper, Mads Faurschou Knudsen, (unknown)	2
12	Fossils explained 40: The Lady Burn Starfish Beds 2002 ·Geology Today ·(unknown), (unknown), David A. T. Harper	3
13	Ordovician brachiopod diversity 2001 ·Research at the University of Copenhagen (University of Copenhagen) ·David A. T. Harper, Michael G. Bassett, L. R. M. Cocks, Paul Copper, (unknown), (unknown), Leonid E. Popov, Rong Jiayu, Peter M. Sheehan	4
14	History of biodiversity 2000 ·Bristol Research (University of Bristol) ·Michael J. Benton, David A. T. Harper	0
15	Late Ordovician Foreland Basin Fill: Long Point Group of Onshore Western Newfoundland 1999 ·Bulletin of Canadian Petroleum Geology ·(unknown), S. Henry Williams, David A. T. Harper, Euan N. K. Clarkson	30
16	A lingulate brachiopod Acrotretella: new data from Ordovician of Poland 1999 ·Acta Palaeontologica Polonica ·(unknown), David A. T. Harper	4
17	Geological Survey donations to the Geological Museum in Queen's College Galway: 19th Century inter-institutional collaboration in Ireland 1996 ·Geological Curator ·David A. T. Harper, M.J. Parkes	3
18	Eutrophication of Freshwaters 1992 ·David A. T. Harper	231
19	Upper Ordovician brachiopods and tribloites from the Clashford House Formation, near Herbertstown, Co. Meath, Ireland 1985 ·David A. T. Harper, W. I. Mitchell, Alan W. Owen, M. Romano	13
20	The taxonomy, shell structure, and palaeoecology of the Trimerellid brachiopod Gasconsia Northrop 1985 ·Palaeontology ·Nils‐Martin Hanken, David A. T. Harper	10

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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