Scimago Journal & Country Rank

Lethaia

Country

United States

Universities and research institutions in United States

Subject Area and Category

Publisher

Wiley-Blackwell

H-Index

57

Publication type

Journals

ISSN

00241164, 15023931

Coverage

1968-2020

Information

Homepage

How to publish in this journal

doyle268@btinternet.com

Scope

A formal publication outlet for the International Palaeontological Association (IPA) and the International Commission on Stratigraphy (ICS), Lethaia publishes articles of international interest in the fields of palaeontology and stratigraphy. The articles concentrate on the development of new ideas and methods and descriptions of new features of wide significance rather than routine descriptions. Palaeobiology and ecostratigraphy are the core topics of the journal. In addition to articles, Lethaia contains shorter contributions in the form of discussions, presentations of current scientific activities, reviews and editorials. Lethaia was launched in 1968 as a joint venture between scientists in Denmark, Norway, and Sweden, with the aim of promoting the development of modern methods in scientific publishing and of providing a medium for rapid publication of well-prepared manuscripts of wide international interest. Join the conversation about this journal
Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

CategoryYearQuartile
Ecology, Evolution, Behavior and Systematics1999Q1
Ecology, Evolution, Behavior and Systematics2000Q3
Ecology, Evolution, Behavior and Systematics2001Q2
Ecology, Evolution, Behavior and Systematics2002Q2
Ecology, Evolution, Behavior and Systematics2003Q2
Ecology, Evolution, Behavior and Systematics2004Q2
Ecology, Evolution, Behavior and Systematics2005Q1
Ecology, Evolution, Behavior and Systematics2006Q1
Ecology, Evolution, Behavior and Systematics2007Q1
Ecology, Evolution, Behavior and Systematics2008Q1
Ecology, Evolution, Behavior and Systematics2009Q1
Ecology, Evolution, Behavior and Systematics2010Q1
Ecology, Evolution, Behavior and Systematics2011Q1
Ecology, Evolution, Behavior and Systematics2012Q1
Ecology, Evolution, Behavior and Systematics2013Q1
Ecology, Evolution, Behavior and Systematics2014Q2
Ecology, Evolution, Behavior and Systematics2015Q2
Ecology, Evolution, Behavior and Systematics2016Q2
Ecology, Evolution, Behavior and Systematics2017Q2
Ecology, Evolution, Behavior and Systematics2018Q2
Ecology, Evolution, Behavior and Systematics2019Q1
Ecology, Evolution, Behavior and Systematics2020Q1
Paleontology1999Q1
Paleontology2000Q2
Paleontology2001Q1
Paleontology2002Q1
Paleontology2003Q1
Paleontology2004Q1
Paleontology2005Q1
Paleontology2006Q1
Paleontology2007Q1
Paleontology2008Q1
Paleontology2009Q1
Paleontology2010Q1
Paleontology2011Q1
Paleontology2012Q1
Paleontology2013Q1
Paleontology2014Q1
Paleontology2015Q1
Paleontology2016Q1
Paleontology2017Q1
Paleontology2018Q1
Paleontology2019Q1
Paleontology2020Q1
SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

YearSJR
19991.189
20000.553
20010.844
20020.865
20030.854
20040.860
20051.146
20061.229
20071.495
20081.101
20091.386
20101.399
20111.160
20121.240
20131.092
20141.001
20150.948
20160.837
20170.873
20180.869
20190.885
20200.926
Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

YearDocuments
199931
200028
200123
200230
200328
200439
200534
200633
200736
200842
200947
201052
201146
201252
201346
201446
201546
201644
201743
201847
201939
202055
Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19990.991
Cites / Doc. (4 years)20000.819
Cites / Doc. (4 years)20011.067
Cites / Doc. (4 years)20020.992
Cites / Doc. (4 years)20031.295
Cites / Doc. (4 years)20041.147
Cites / Doc. (4 years)20051.658
Cites / Doc. (4 years)20061.863
Cites / Doc. (4 years)20072.112
Cites / Doc. (4 years)20081.796
Cites / Doc. (4 years)20091.855
Cites / Doc. (4 years)20102.089
Cites / Doc. (4 years)20112.141
Cites / Doc. (4 years)20122.187
Cites / Doc. (4 years)20132.198
Cites / Doc. (4 years)20141.883
Cites / Doc. (4 years)20152.016
Cites / Doc. (4 years)20162.026
Cites / Doc. (4 years)20171.819
Cites / Doc. (4 years)20181.804
Cites / Doc. (4 years)20192.167
Cites / Doc. (4 years)20202.202
Cites / Doc. (3 years)19990.991
Cites / Doc. (3 years)20000.736
Cites / Doc. (3 years)20011.104
Cites / Doc. (3 years)20020.927
Cites / Doc. (3 years)20031.160
Cites / Doc. (3 years)20041.185
Cites / Doc. (3 years)20051.711
Cites / Doc. (3 years)20061.941
Cites / Doc. (3 years)20072.094
Cites / Doc. (3 years)20081.563
Cites / Doc. (3 years)20091.946
Cites / Doc. (3 years)20102.072
Cites / Doc. (3 years)20112.007
Cites / Doc. (3 years)20122.290
Cites / Doc. (3 years)20132.127
Cites / Doc. (3 years)20141.910
Cites / Doc. (3 years)20151.799
Cites / Doc. (3 years)20161.993
Cites / Doc. (3 years)20171.882
Cites / Doc. (3 years)20181.759
Cites / Doc. (3 years)20192.172
Cites / Doc. (3 years)20202.233
Cites / Doc. (2 years)19990.867
Cites / Doc. (2 years)20000.765
Cites / Doc. (2 years)20011.051
Cites / Doc. (2 years)20020.686
Cites / Doc. (2 years)20031.019
Cites / Doc. (2 years)20041.103
Cites / Doc. (2 years)20051.761
Cites / Doc. (2 years)20062.041
Cites / Doc. (2 years)20071.507
Cites / Doc. (2 years)20081.652
Cites / Doc. (2 years)20091.679
Cites / Doc. (2 years)20101.955
Cites / Doc. (2 years)20111.970
Cites / Doc. (2 years)20122.367
Cites / Doc. (2 years)20132.255
Cites / Doc. (2 years)20141.633
Cites / Doc. (2 years)20151.598
Cites / Doc. (2 years)20162.163
Cites / Doc. (2 years)20172.044
Cites / Doc. (2 years)20181.598
Cites / Doc. (2 years)20192.233
Cites / Doc. (2 years)20202.128
Total Cites 
Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

CitesYearValue
Self Cites19999
Self Cites20006
Self Cites20013
Self Cites20025
Self Cites20032
Self Cites20049
Self Cites20056
Self Cites20067
Self Cites200716
Self Cites20089
Self Cites200911
Self Cites201015
Self Cites201119
Self Cites201215
Self Cites201315
Self Cites201414
Self Cites201510
Self Cites201612
Self Cites201711
Self Cites20185
Self Cites201912
Self Cites202013
Total Cites1999112
Total Cites200078
Total Cites2001106
Total Cites200276
Total Cites200394
Total Cites200496
Total Cites2005166
Total Cites2006196
Total Cites2007222
Total Cites2008161
Total Cites2009216
Total Cites2010259
Total Cites2011283
Total Cites2012332
Total Cites2013319
Total Cites2014275
Total Cites2015259
Total Cites2016275
Total Cites2017256
Total Cites2018234
Total Cites2019291
Total Cites2020288
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

CitesYearValue
External Cites per document19990.912
External Cites per document20000.679
External Cites per document20011.073
External Cites per document20020.866
External Cites per document20031.136
External Cites per document20041.074
External Cites per document20051.649
External Cites per document20061.890
External Cites per document20071.981
External Cites per document20081.520
External Cites per document20091.934
External Cites per document20102.033
External Cites per document20111.985
External Cites per document20122.402
External Cites per document20132.219
External Cites per document20141.933
External Cites per document20151.741
External Cites per document20161.906
External Cites per document20171.801
External Cites per document20181.722
External Cites per document20192.098
External Cites per document20202.148
Cites per document19990.991
Cites per document20000.736
Cites per document20011.104
Cites per document20020.927
Cites per document20031.160
Cites per document20041.185
Cites per document20051.711
Cites per document20061.941
Cites per document20072.094
Cites per document20081.563
Cites per document20091.946
Cites per document20102.072
Cites per document20112.007
Cites per document20122.290
Cites per document20132.127
Cites per document20141.910
Cites per document20151.799
Cites per document20161.993
Cites per document20171.882
Cites per document20181.759
Cites per document20192.172
Cites per document20202.233
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
199929.03
200025.00
20018.70
20023.33
200332.14
200443.59
200547.06
200618.18
200744.44
200850.00
200946.81
201048.08
201150.00
201261.54
201341.30
201436.96
201541.30
201638.64
201751.16
201848.94
201951.28
202060.00
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

DocumentsYearValue
Non-citable documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20020
Non-citable documents20030
Non-citable documents20040
Non-citable documents20050
Non-citable documents20061
Non-citable documents20072
Non-citable documents20083
Non-citable documents20095
Non-citable documents20105
Non-citable documents20118
Non-citable documents201213
Non-citable documents201313
Non-citable documents20149
Non-citable documents20151
Non-citable documents20160
Non-citable documents20170
Non-citable documents20180
Non-citable documents20191
Non-citable documents20201
Citable documents1999113
Citable documents2000106
Citable documents200196
Citable documents200282
Citable documents200381
Citable documents200481
Citable documents200597
Citable documents2006100
Citable documents2007104
Citable documents2008100
Citable documents2009106
Citable documents2010120
Citable documents2011133
Citable documents2012132
Citable documents2013137
Citable documents2014135
Citable documents2015143
Citable documents2016138
Citable documents2017136
Citable documents2018133
Citable documents2019133
Citable documents2020128
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

DocumentsYearValue
Uncited documents199960
Uncited documents200061
Uncited documents200147
Uncited documents200241
Uncited documents200329
Uncited documents200439
Uncited documents200543
Uncited documents200639
Uncited documents200744
Uncited documents200836
Uncited documents200943
Uncited documents201036
Uncited documents201144
Uncited documents201241
Uncited documents201336
Uncited documents201440
Uncited documents201538
Uncited documents201625
Uncited documents201729
Uncited documents201843
Uncited documents201941
Uncited documents202029
Cited documents199953
Cited documents200045
Cited documents200149
Cited documents200241
Cited documents200352
Cited documents200442
Cited documents200554
Cited documents200662
Cited documents200762
Cited documents200867
Cited documents200968
Cited documents201089
Cited documents201197
Cited documents2012104
Cited documents2013114
Cited documents2014104
Cited documents2015106
Cited documents2016113
Cited documents2017107
Cited documents201890
Cited documents201993
Cited documents2020100
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