Class information for:
Level 1: PERMIAN TRIASSIC BOUNDARY//EARLY TRIASSIC//PERMIAN

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
4053 1781 62.2 40%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
47 30591 PALEONTOLOGY//JOURNAL OF PALEONTOLOGY//AMMONITES

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 PERMIAN TRIASSIC BOUNDARY Author keyword 239 83% 8% 137
2 EARLY TRIASSIC Author keyword 82 57% 5% 96
3 PERMIAN Author keyword 63 21% 15% 274
4 CHANGHSINGIAN Author keyword 51 91% 1% 21
5 MASS EXTINCTION Author keyword 51 33% 7% 128
6 END PERMIAN MASS EXTINCTION Author keyword 50 84% 2% 27
7 BIOTIC RECOVERY Author keyword 50 76% 2% 35
8 END PERMIAN Author keyword 48 91% 1% 20
9 WUCHIAPINGIAN Author keyword 37 100% 1% 14
10 LOWER TRIASSIC Author keyword 35 52% 3% 47

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 PERMIAN TRIASSIC BOUNDARY 239 83% 8% 137 Search PERMIAN+TRIASSIC+BOUNDARY Search PERMIAN+TRIASSIC+BOUNDARY
2 EARLY TRIASSIC 82 57% 5% 96 Search EARLY+TRIASSIC Search EARLY+TRIASSIC
3 PERMIAN 63 21% 15% 274 Search PERMIAN Search PERMIAN
4 CHANGHSINGIAN 51 91% 1% 21 Search CHANGHSINGIAN Search CHANGHSINGIAN
5 MASS EXTINCTION 51 33% 7% 128 Search MASS+EXTINCTION Search MASS+EXTINCTION
6 END PERMIAN MASS EXTINCTION 50 84% 2% 27 Search END+PERMIAN+MASS+EXTINCTION Search END+PERMIAN+MASS+EXTINCTION
7 BIOTIC RECOVERY 50 76% 2% 35 Search BIOTIC+RECOVERY Search BIOTIC+RECOVERY
8 END PERMIAN 48 91% 1% 20 Search END+PERMIAN Search END+PERMIAN
9 WUCHIAPINGIAN 37 100% 1% 14 Search WUCHIAPINGIAN Search WUCHIAPINGIAN
10 LOWER TRIASSIC 35 52% 3% 47 Search LOWER+TRIASSIC Search LOWER+TRIASSIC

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 MEISHAN SECTION 208 95% 4% 71
2 NANPANJIANG BASIN 207 87% 6% 103
3 TRIASSIC BOUNDARY 149 55% 10% 185
4 BIOTIC RECOVERY 146 86% 4% 74
5 OCEANIC CONDITIONS 143 100% 2% 39
6 MASS EXTINCTION 122 27% 22% 384
7 GLOBAL STRATOTYPE SECTION 101 64% 6% 98
8 2 EPISODES 87 88% 2% 42
9 PERMIAN MASS EXTINCTION 81 47% 7% 126
10 BIOTIC CRISIS 81 59% 5% 90

Journals


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 GEOARABIA 4 13% 1% 26
2 PALEONTOLOGICAL RESEARCH 2 10% 1% 22

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
Carbon-isotope stratigraphy across the Permian-Triassic boundary: A review 2010 72 213 80%
The timing and pattern of biotic recovery following the end-Permian mass extinction 2012 67 84 68%
End-Permian Mass Extinction in the Oceans: An Ancient Analog for the Twenty-First Century? 2012 48 124 81%
Paleophysiology and end-Permian mass extinction 2007 232 108 48%
Methane release from igneous intrusion of coal during late permian extinction events 2008 85 78 49%
Impacts of global warming on Permo-Triassic terrestrial ecosystems 2014 13 212 40%
Biogeochemical evidence for euxinic oceans and ecological disturbance presaging the end-Permian mass extinction event 2009 98 93 44%
A review of Permian stratigraphy, palaeobiogeography and palaeogeography of the Qinghai-Tibet Plateau 2013 13 76 61%
How to kill (almost) all life: the end-Permian extinction event 2003 150 36 72%
Permian ice volume and palaeoclimate history: Oxygen isotope proxies revisited 2013 14 107 53%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 MUSEUM PALAEONTOL 11 65% 0.6% 11
2 BIOGEOL ENVIRONM GEOL 11 18% 3.3% 58
3 STATE BIOGEOL ENVIRONM GEOL 7 10% 3.9% 70
4 SEDIMENTARY GEOL GRP 7 67% 0.3% 6
5 GPMR 6 71% 0.3% 5
6 PALAONTOL MUSEUM 6 16% 2.0% 35
7 BIOL ENVIRONM GEOL 5 47% 0.4% 8
8 BGEG 3 100% 0.2% 3
9 BGEG S 3 100% 0.2% 3
10 MARINE MICROPALEONTOL UNIT 2 44% 0.2% 4

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000196674 TEPUEL GENOA BASIN//PAGANZO BASIN//PARANA BASIN
2 0.0000148608 CALGARY ADV TECHNOL 120//CYBERM PING//HYBODONTOID
3 0.0000147729 VISEAN//MISSISSIPPIAN//SERPUKHOVIAN
4 0.0000130774 EMEISHAN LARGE IGNEOUS PROVINCE//EMEISHAN//SW CHINA
5 0.0000102289 TRIASSIC JURASSIC BOUNDARY//CENTRAL ATLANTIC MAGMATIC PROVINCE//END TRIASSIC MASS EXTINCTION
6 0.0000091320 RADIOLARIA//RADIOLARIANS//NASSELLARIA
7 0.0000089328 CARBONATE PLATFORM//CARNIAN//MIDDLE TRIASSIC
8 0.0000084690 PALEOBIOLOGY//COORDINATED STASIS//MACROEVOLUTION
9 0.0000075986 GIONYAMA FORMATION//DITOMOPYGINAE//LIFE ASSEMBLAGES
10 0.0000057597 TABULATA//ARCHAEOCYATHA//HETERACTINIDA