Class information for:
Level 1: ORDOVICIAN//GRAPTOLITES//SILURIAN

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
11 4 ECOLOGY//ZOOLOGY//MARINE & FRESHWATER BIOLOGY 1214215
313 3       PALEONTOLOGY//JOURNAL OF PALEONTOLOGY//PALAEONTOLOGY 39731
300 2             PALEONTOLOGY//JOURNAL OF PALEONTOLOGY//ORDOVICIAN 18876
886 1                   ORDOVICIAN//GRAPTOLITES//SILURIAN 3028

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ORDOVICIAN authKW 2278263 17% 43% 504
2 GRAPTOLITES authKW 2055266 8% 84% 236
3 SILURIAN authKW 1556472 11% 43% 344
4 CHITINOZOANS authKW 958125 3% 90% 102
5 HIRNANTIAN authKW 657883 2% 88% 72
6 ACRITARCHS authKW 543799 4% 47% 112
7 PALEONTOLOGY WoSSC 541974 57% 3% 1728
8 CONODONTS authKW 535941 6% 27% 191
9 LATE ORDOVICIAN authKW 485966 2% 65% 72
10 LLANDOVERY authKW 480244 2% 73% 63

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Paleontology 541974 57% 3% 1728
2 Geology 43771 17% 1% 510
3 Geosciences, Multidisciplinary 34257 39% 0% 1187
4 Geography, Physical 4305 7% 0% 200
5 Plant Sciences 186 5% 0% 154
6 Biodiversity Conservation 93 1% 0% 33
7 Engineering, Petroleum 39 0% 0% 14
8 Geochemistry & Geophysics 37 2% 0% 51
9 Evolutionary Biology 34 1% 0% 34
10 Ecology 1 1% 0% 44

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 NANJING GEOL PALAEONTOL 196396 6% 11% 180
2 EARTH HIST 166807 1% 70% 23
3 STATE PALAEOBIOL STRATIG 105252 3% 10% 98
4 HGRP PALAOUMWELT 100202 1% 28% 34
5 GEOL MUSEUM 97411 2% 14% 67
6 GEOL 85477 25% 1% 759
7 ECOSTRATIG PALAEOBIOL 65359 1% 37% 17
8 SN5 65034 0% 63% 10
9 UNIT PALAEONTOL 62918 1% 21% 29
10 HIST GEOL 57225 0% 50% 11

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 GFF 326427 5% 19% 162
2 ESTONIAN JOURNAL OF EARTH SCIENCES 283612 3% 32% 85
3 LETHAIA 151964 5% 10% 143
4 PALAEONTOLOGY 143767 6% 8% 171
5 JOURNAL OF PALEONTOLOGY 123801 7% 6% 216
6 GEOLOGICAL MAGAZINE 98802 5% 7% 140
7 ALCHERINGA 75703 3% 9% 84
8 REVIEW OF PALAEOBOTANY AND PALYNOLOGY 69206 5% 5% 140
9 BULLETIN OF GEOSCIENCES 61562 2% 12% 50
10 CANADIAN JOURNAL OF EARTH SCIENCES 56160 5% 3% 164

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 ORDOVICIAN 2278263 17% 43% 504 Search ORDOVICIAN Search ORDOVICIAN
2 GRAPTOLITES 2055266 8% 84% 236 Search GRAPTOLITES Search GRAPTOLITES
3 SILURIAN 1556472 11% 43% 344 Search SILURIAN Search SILURIAN
4 CHITINOZOANS 958125 3% 90% 102 Search CHITINOZOANS Search CHITINOZOANS
5 HIRNANTIAN 657883 2% 88% 72 Search HIRNANTIAN Search HIRNANTIAN
6 ACRITARCHS 543799 4% 47% 112 Search ACRITARCHS Search ACRITARCHS
7 CONODONTS 535941 6% 27% 191 Search CONODONTS Search CONODONTS
8 LATE ORDOVICIAN 485966 2% 65% 72 Search LATE+ORDOVICIAN Search LATE+ORDOVICIAN
9 LLANDOVERY 480244 2% 73% 63 Search LLANDOVERY Search LLANDOVERY
10 BALTOSCANDIA 419602 2% 81% 50 Search BALTOSCANDIA Search BALTOSCANDIA

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1


rank cluster_id2 link
1 3254 TRILOBITES//CAMBRIAN//TRILOBITA
2 14519 STROMATOPOROIDS//TABULATA//STROMATOPOROIDEA
3 14491 BRACHIOPODA//BRACHIOPODS//LINGULATA
4 21442 UNIT PALAEONTOL GEOL PEDOL//BRABANT MASSIF//GCR SITES
5 8787 FRASNIAN//DEVONIAN//LATE DEVONIAN
6 32084 CONULARIIDS//LEPTOSTRACA//SPHENOTHALLUS
7 27258 RADIOLARIA//GIONYAMA FORMATION//TYPES OF SYMMETRY
8 5021 PALEOBIOLOGY//PALEONTOLOGY//MACROEVOLUTION
9 9844 CRYPTOSPORES//EARLY LAND PLANTS//CLADOXYLOPSIDA
10 9657 CRINOIDEA//CRINOIDS//ECHINODERMATA

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