| Discipline name | D-Index | World Ranking | Current World Ranking | National Ranking | Current National Ranking | Publications | Citations |
|---|---|---|---|---|---|---|---|
| Ecology and Evolution | 68 | 1531 | 1463 | 563 | 530 | 178 | 15753 |
The chart shows the history of publications by James W. Valentine between 1955 and 2022, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. James W. Valentine published across 68 years, from 1955 to 2022, averaging 2.8 papers a year. Output peaked at 12 publications in 1975. 1 of the 193 publications appeared in the last two years.
193 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1955 | 2 |
| 1956 | 0 |
| 1957 | 0 |
| 1958 | 1 |
| 1959 | 0 |
| 1960 | 2 |
| 1961 | 4 |
| 1962 | 1 |
| 1963 | 4 |
| 1964 | 0 |
| 1965 | 1 |
| 1966 | 2 |
| 1967 | 1 |
| 1968 | 3 |
| 1969 | 3 |
| 1970 | 4 |
| 1971 | 4 |
| 1972 | 1 |
| 1973 | 5 |
| 1974 | 6 |
| 1975 | 12 |
| 1976 | 2 |
| 1977 | 5 |
| 1978 | 3 |
| 1979 | 4 |
| 1980 | 3 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 4 |
| 1984 | 3 |
| 1985 | 2 |
| 1986 | 9 |
| 1987 | 4 |
| 1988 | 1 |
| 1989 | 6 |
| 1990 | 4 |
| 1991 | 4 |
| 1992 | 4 |
| 1993 | 3 |
| 1994 | 3 |
| 1995 | 2 |
| 1996 | 6 |
| 1997 | 4 |
| 1998 | 2 |
| 1999 | 1 |
| 2000 | 5 |
| 2001 | 5 |
| 2002 | 4 |
| 2003 | 4 |
| 2004 | 3 |
| 2005 | 1 |
| 2006 | 4 |
| 2007 | 2 |
| 2008 | 3 |
| 2009 | 7 |
| 2010 | 3 |
| 2011 | 1 |
| 2012 | 1 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 1 |
| Total | 193 |
The chart shows the distribution of publications by all Research.com ranked scientists in the field of Ecology and Evolution in 2026. The highlighted bar marks where James W. Valentine sits on this spectrum.
This scientist: 178 publications — 65th percentile
65% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 531 publications or more.
| Publications | Scientists | This scientist |
|---|---|---|
| 37–41 | 2 | |
| 42–46 | 9 | |
| 47–51 | 10 | |
| 52–56 | 31 | |
| 57–61 | 56 | |
| 62–66 | 91 | |
| 67–71 | 92 | |
| 72–76 | 127 | |
| 77–81 | 173 | |
| 82–86 | 236 | |
| 87–91 | 227 | |
| 92–96 | 240 | |
| 97–101 | 333 | |
| 102–106 | 280 | |
| 107–111 | 300 | |
| 112–116 | 285 | |
| 117–121 | 305 | |
| 122–126 | 287 | |
| 127–131 | 278 | |
| 132–136 | 289 | |
| 137–141 | 273 | |
| 142–146 | 262 | |
| 147–151 | 246 | |
| 152–156 | 235 | |
| 157–161 | 205 | |
| 162–166 | 199 | |
| 167–171 | 174 | |
| 172–176 | 164 | |
| 177–181 | 173 | 178 |
| 182–186 | 189 | |
| 187–191 | 170 | |
| 192–196 | 139 | |
| 197–201 | 128 | |
| 202–206 | 117 | |
| 207–211 | 115 | |
| 212–216 | 107 | |
| 217–221 | 124 | |
| 222–226 | 81 | |
| 227–231 | 82 | |
| 232–236 | 85 | |
| 237–241 | 75 | |
| 242–246 | 66 | |
| 247–251 | 81 | |
| 252–256 | 69 | |
| 257–261 | 70 | |
| 262–266 | 55 | |
| 267–271 | 64 | |
| 272–276 | 49 | |
| 277–281 | 48 | |
| 282–286 | 44 | |
| 287–291 | 45 | |
| 292–296 | 36 | |
| 297–301 | 39 | |
| 302–306 | 38 | |
| 307–311 | 30 | |
| 312–316 | 34 | |
| 317–321 | 25 | |
| 322–326 | 22 | |
| 327–331 | 28 | |
| 332–336 | 30 | |
| 337–341 | 22 | |
| 342–346 | 30 | |
| 347–351 | 26 | |
| 352–356 | 22 | |
| 357–361 | 29 | |
| 362–366 | 21 | |
| 367–371 | 12 | |
| 372–376 | 18 | |
| 377–381 | 17 | |
| 382–386 | 13 | |
| 387–391 | 21 | |
| 392–396 | 13 | |
| 397–401 | 10 | |
| 402–406 | 15 | |
| 407–411 | 8 | |
| 412–416 | 9 | |
| 417–421 | 8 | |
| 422–426 | 4 | |
| 427–431 | 10 | |
| 432–436 | 10 | |
| 437–441 | 5 | |
| 442–446 | 4 | |
| 447–451 | 10 | |
| 452–456 | 2 | |
| 457–461 | 4 | |
| 462–466 | 7 | |
| 467–471 | 7 | |
| 472–476 | 6 | |
| 477–481 | 6 | |
| 482–486 | 3 | |
| 487–491 | 3 | |
| 492–496 | 4 | |
| 497–501 | 4 | |
| 502–506 | 8 | |
| 507–511 | 5 | |
| 512–516 | 4 | |
| 517–521 | 5 | |
| 522–526 | 4 | |
| 527–530 | 5 | |
| 531+ | 100 |
The chart shows the D-index (discipline H-index) distribution of Ecology and Evolution scientists ranked by Research.com in 2026. The highlighted bar marks where James W. Valentine sits on this spectrum.
This scientist: 68 D-Index — 82nd percentile
82% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 121 D-Index or more.
| D-Index | Scientists | This scientist |
|---|---|---|
| 30 | 95 | |
| 31 | 123 | |
| 32 | 191 | |
| 33 | 245 | |
| 34 | 252 | |
| 35 | 244 | |
| 36 | 249 | |
| 37 | 244 | |
| 38 | 254 | |
| 39 | 254 | |
| 40 | 280 | |
| 41 | 274 | |
| 42 | 266 | |
| 43 | 233 | |
| 44 | 248 | |
| 45 | 208 | |
| 46 | 201 | |
| 47 | 213 | |
| 48 | 207 | |
| 49 | 172 | |
| 50 | 209 | |
| 51 | 199 | |
| 52 | 153 | |
| 53 | 169 | |
| 54 | 163 | |
| 55 | 148 | |
| 56 | 120 | |
| 57 | 146 | |
| 58 | 137 | |
| 59 | 140 | |
| 60 | 104 | |
| 61 | 119 | |
| 62 | 118 | |
| 63 | 99 | |
| 64 | 77 | |
| 65 | 100 | |
| 66 | 86 | |
| 67 | 83 | |
| 68 | 75 | 68 |
| 69 | 94 | |
| 70 | 57 | |
| 71 | 68 | |
| 72 | 59 | |
| 73 | 63 | |
| 74 | 66 | |
| 75 | 60 | |
| 76 | 42 | |
| 77 | 49 | |
| 78 | 39 | |
| 79 | 37 | |
| 80 | 43 | |
| 81 | 41 | |
| 82 | 45 | |
| 83 | 34 | |
| 84 | 40 | |
| 85 | 35 | |
| 86 | 55 | |
| 87 | 24 | |
| 88 | 24 | |
| 89 | 30 | |
| 90 | 23 | |
| 91 | 25 | |
| 92 | 27 | |
| 93 | 27 | |
| 94 | 13 | |
| 95 | 23 | |
| 96 | 12 | |
| 97 | 14 | |
| 98 | 19 | |
| 99 | 16 | |
| 100 | 14 | |
| 101 | 5 | |
| 102 | 21 | |
| 103 | 16 | |
| 104 | 10 | |
| 105 | 7 | |
| 106 | 7 | |
| 107 | 7 | |
| 108 | 6 | |
| 109 | 9 | |
| 110 | 11 | |
| 111 | 12 | |
| 112 | 9 | |
| 113 | 7 | |
| 114 | 3 | |
| 115 | 8 | |
| 116 | 5 | |
| 117 | 11 | |
| 118 | 4 | |
| 119 | 2 | |
| 120 | 5 | |
| 121+ | 100 |
James W. Valentine is affiliated with the University of California, Berkeley in the United States. Their primary research domain lies within Earth and Planetary Sciences, with a specific focus on Paleontology.
Their work frequently addresses topics related to:
James W. Valentine has published research in venues such as:
One of their recent publications is "Suppressed speciation rates and compositional changes in Paleozoic faunas," published in 2022 in the Spanish Journal of Palaeontology.
Over the course of their career, Valentine has been recognized with several awards, including:
David Jablonski;Kaustuv Roy;James W. Valentine
James W. Valentine
Kaustuv Roy;David Jablonski;James W. Valentine;Gary Rosenberg
J. John Sepkoski;Richard K. Bambach;David M. Raup;James W. Valentine
James W. Valentine
Valentine Jw;Moores Em
James W. Valentine;David Jablonski;Douglas H. Erwin
James W. Valentine
James W. Valentine;Allen G. Collins;C. Porter Meyer
James W. Valentine
Douglas H. Erwin;James W. Valentine;J. John Sepkoski
Francisco J. Ayala;Dennis Hedgecock;Gary S. Zumwalt;James W. Valentine
Kaustuv Roy;James W. Valentine;David Jablonski;Susan M. Kidwell
David Jablonski;David Jablonski;David Jablonski;Kaustuv Roy;Kaustuv Roy;Kaustuv Roy;James W. Valentine;James W. Valentine;James W. Valentine;Rebecca M. Price;Rebecca M. Price;Rebecca M. Price
Jennifer Sills;P. H. Gleick;R. M. Adams;R. M. Amasino
Timothy D. Walker;James W. Valentine
David Jablonski;Christina L. Belanger;Sarah K. Berke;Shan Huang
Kaustuv Roy;David Jablonski;James W. Valentine
James W. Valentine;Eldridge M. Moores
Kaustuv Roy;David Jablonski;James W. Valentine
James W. Valentine;Douglas H. Erwin;David Jablonski
James W. Valentine
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