Cretaceous–Paleogene boundary

Cretaceous–Paleogene boundary - geological signature, usually a thin band of rock, marking the transition from the end of the Cretaceous Period and the beginning of the Paleogene Period, dated with radiometric methods, at the age of 66.043 ± 0.011 Ma. Article “Cretaceous–Paleogene boundary” in English Wikipedia has 67.8 points for quality (as of July 1, 2025). The article contains 39 references and 13 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

In June 2025 the article “Cretaceous–Paleogene boundary” was edited by 2 authors in English Wikipedia and written by 6 authors in all languages.

Since the creation of article “Cretaceous–Paleogene boundary”, its content was written by 183 registered users of English Wikipedia and edited by 656 registered Wikipedia users in all languages.

The article is cited 570 times in English Wikipedia and cited 1591 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #8738 in March 2003
• Global: #9693 in December 2003

The highest popularity rank from 2008:

• Local (English): #25208 in January 2008
• Global: #21492 in February 2011

There are 22 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) Cretaceous–Paleogene boundary		67.7836
2	Japanese (ja) K-Pg境界		55.9681
3	Hungarian (hu) K-T határ		50.6681
4	German (de) Kreide-Paläogen-Grenze		47.7134
5	Latin (la) Terminus Cretaceus Palaeogenicus		34.9836
6	Basque (eu) K-T muga		34.0121
7	Hindi (hi) के-पीजी सीमा		29.2469
8	Italian (it) Limite K-T		28.5921
9	Czech (cs) K-T rozhraní		26.0244
10	Russian (ru) Мел-палеогеновая граница		24.1864

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The following table shows the most popular language versions of the article.

The most popular language versions of the article "Cretaceous–Paleogene boundary" in all the time

#	Language	Popularity award	Relative popularity
1	English (en) Cretaceous–Paleogene boundary		2 162 605
2	Japanese (ja) K-Pg境界		1 567 227
3	German (de) Kreide-Paläogen-Grenze		832 361
4	Italian (it) Limite K-T		192 319
5	Spanish (es) Límite Cretácico-Paleógeno		177 864
6	Polish (pl) Granica K-T		82 600
7	Chinese (zh) 白堊紀—古近紀界線		80 998
8	Portuguese (pt) Nível K-Pg		54 114
9	Finnish (fi) K/T-raja		44 899
10	Czech (cs) K-T rozhraní		21 857

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The following table shows the language versions of the article with the highest popularity in the last month.

The most popular language versions of the article "Cretaceous–Paleogene boundary" in June 2025

#	Language	Popularity award	Relative popularity
1	English (en) Cretaceous–Paleogene boundary		10 466
2	Japanese (ja) K-Pg境界		5 418
3	German (de) Kreide-Paläogen-Grenze		3 250
4	Italian (it) Limite K-T		862
5	Spanish (es) Límite Cretácico-Paleógeno		701
6	Chinese (zh) 白堊紀—古近紀界線		484
7	Polish (pl) Granica K-T		265
8	Portuguese (pt) Nível K-Pg		253
9	Russian (ru) Мел-палеогеновая граница		234
10	Finnish (fi) K/T-raja		136

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The following table shows the language versions of the article with the highest Authors’ Interest.

Language versions of the article "Cretaceous–Paleogene boundary" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.

#	Language	AI award	Relative AI
1	German (de) Kreide-Paläogen-Grenze		189
2	English (en) Cretaceous–Paleogene boundary		183
3	Japanese (ja) K-Pg境界		93
4	Italian (it) Limite K-T		41
5	Finnish (fi) K/T-raja		27
6	Spanish (es) Límite Cretácico-Paleógeno		20
7	Czech (cs) K-T rozhraní		16
8	Basque (eu) K-T muga		11
9	Hungarian (hu) K-T határ		11
10	Chinese (zh) 白堊紀—古近紀界線		11

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The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

Language versions of the article "Cretaceous–Paleogene boundary" with the highest AI in June 2025

#	Language	AI award	Relative AI
1	Turkish (tr) Kretase-Paleojen sınırı		3
2	English (en) Cretaceous–Paleogene boundary		2
3	Hungarian (hu) K-T határ		1
4	Arabic (ar) حدود الطباشيري-الباليوجيني		0
5	Catalan (ca) Límit Cretaci-Paleogen		0
6	Czech (cs) K-T rozhraní		0
7	German (de) Kreide-Paläogen-Grenze		0
8	Spanish (es) Límite Cretácico-Paleógeno		0
9	Basque (eu) K-T muga		0
10	Persian (fa) مرز کرتاسه–پالئوژن		0

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The following table shows the language versions of the article with the highest number of citations.

Language versions of the article "Cretaceous–Paleogene boundary" with the highest Citation Index (CI)

#	Language	CI award	Relative CI
1	English (en) Cretaceous–Paleogene boundary		570
2	German (de) Kreide-Paläogen-Grenze		222
3	Japanese (ja) K-Pg境界		204
4	Chinese (zh) 白堊紀—古近紀界線		80
5	Portuguese (pt) Nível K-Pg		69
6	Persian (fa) مرز کرتاسه–پالئوژن		57
7	Spanish (es) Límite Cretácico-Paleógeno		53
8	Italian (it) Limite K-T		50
9	Czech (cs) K-T rozhraní		49
10	Arabic (ar) حدود الطباشيري-الباليوجيني		48

More...

#	Language	Value
ar	Arabic حدود الطباشيري-الباليوجيني
ca	Catalan Límit Cretaci-Paleogen
cs	Czech K-T rozhraní
de	German Kreide-Paläogen-Grenze
en	English Cretaceous–Paleogene boundary
es	Spanish Límite Cretácico-Paleógeno
eu	Basque K-T muga
fa	Persian مرز کرتاسه–پالئوژن
fi	Finnish K/T-raja
hi	Hindi के-पीजी सीमा
hu	Hungarian K-T határ
id	Indonesian Perbatasan Kapur-Paleogen
it	Italian Limite K-T
ja	Japanese K-Pg境界
ko	Korean 백악기-고진기 경계
la	Latin Terminus Cretaceus Palaeogenicus
no	Norwegian Kritt-paleogen-grensen
pl	Polish Granica K-T
pt	Portuguese Nível K-Pg
ru	Russian Мел-палеогеновая граница
tr	Turkish Kretase-Paleojen sınırı
zh	Chinese 白堊紀—古近紀界線

Best Rank

English: #25208 01.2008

Global: #21492 02.2011

Best Rank

English: #8738 03.2003

Global: #9693 12.2003

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The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information