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

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
976 2835 56.1 26%


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 GRAPTOLITES Author keyword 306 82% 6% 178
2 ORDOVICIAN Author keyword 275 44% 17% 471
3 CHITINOZOANS Author keyword 255 93% 3% 95
4 SILURIAN Author keyword 173 43% 11% 311
5 HIRNANTIAN Author keyword 161 91% 2% 68
6 GRAPTOLITE Author keyword 79 88% 1% 37
7 LLANDOVERY Author keyword 75 72% 2% 59
8 SCOLECODONTS Author keyword 73 89% 1% 33
9 GRAPTOLITHINA Author keyword 72 100% 1% 23
10 LUDLOW Author keyword 67 85% 1% 35

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 GRAPTOLITES 306 82% 6% 178 Search GRAPTOLITES Search GRAPTOLITES
2 ORDOVICIAN 275 44% 17% 471 Search ORDOVICIAN Search ORDOVICIAN
3 CHITINOZOANS 255 93% 3% 95 Search CHITINOZOANS Search CHITINOZOANS
4 SILURIAN 173 43% 11% 311 Search SILURIAN Search SILURIAN
5 HIRNANTIAN 161 91% 2% 68 Search HIRNANTIAN Search HIRNANTIAN
6 GRAPTOLITE 79 88% 1% 37 Search GRAPTOLITE Search GRAPTOLITE
7 LLANDOVERY 75 72% 2% 59 Search LLANDOVERY Search LLANDOVERY
8 SCOLECODONTS 73 89% 1% 33 Search SCOLECODONTS Search SCOLECODONTS
9 GRAPTOLITHINA 72 100% 1% 23 Search GRAPTOLITHINA Search GRAPTOLITHINA
10 LUDLOW 67 85% 1% 35 Search LUDLOW Search LUDLOW

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 SILURIAN BOUNDARY 140 94% 2% 49
2 WENLOCK 96 83% 2% 54
3 GRAPTOLITES 92 78% 2% 62
4 GRAPTOLITE 82 92% 1% 33
5 LLANDOVERY 77 68% 2% 67
6 HUNNEBERG 76 100% 1% 24
7 BALTOSCANDIA 73 65% 2% 69
8 MIDDLE ORDOVICIAN 69 40% 5% 135
9 LUDLOW 65 84% 1% 36
10 LATEST ORDOVICIAN 63 83% 1% 35

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 GFF 35 20% 5% 155
2 ESTONIAN JOURNAL OF EARTH SCIENCES 35 35% 3% 80
3 LETHAIA 15 10% 5% 136
4 BULLETIN OF GEOSCIENCES 5 11% 1% 40
5 PALAEOWORLD 3 18% 0% 14
6 EARTH AND ENVIRONMENTAL SCIENCE TRANSACTIONS OF THE ROYAL SOCIETY OF EDINBURGH 2 10% 1% 18

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
End Ordovician extinctions: A coincidence of causes 2014 7 48 71%
Earth geography from 500 to 400 million years ago: a faunal and palaeomagnetic review 2002 354 42 31%
The end-Ordovician glaciation and the Hirnantian Stage: A global review and questions about Late Ordovician event stratigraphy 2010 44 60 95%
Revised correlation of Silurian Provincial Series of North America with global and regional chronostratigraphic units and delta 13C(carb) chemostratigraphy 2011 28 50 86%
Palaeontological evidence bearing on global Ordovician-Silurian continental reconstructions 2003 170 90 71%
Graptolites in British stratigraphy 2009 57 83 87%
The Global boundary Stratotype Section and Point (GSSP) for the base of the Hirnantian Stage (the uppermost of the Ordovician System) 2006 54 30 93%
Environmental changes in the Late Ordovicianearly Silurian: Review and new insights from black shales and nitrogen isotopes 2013 14 254 59%
The Late Ordovician mass extinction 2001 138 44 57%
First record of the Hirnantian (Upper Ordovician) delta C-13 excursion in the North American Midcontinent and its regional implications 2006 46 38 92%

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 EARTH HIST 25 71% 0.7% 20
2 NANJING GEOL PALAEONTOL 21 12% 5.7% 161
3 STATE PALAEOBIOL STRATIG 12 13% 3.0% 85
4 GEOL MUSEUM 10 14% 2.3% 64
5 HGRP PALAOUMWELT 8 27% 1.0% 27
6 SN5 8 60% 0.3% 9
7 HGRP KRUSTENDYNAM 8 100% 0.2% 5
8 CATEDRA ESTRATIG GEOL HIST 7 38% 0.5% 15
9 MUSEO PALEONTOL 7 28% 0.7% 21
10 ECOSTRATIG PALAEOBIOL 7 35% 0.6% 16

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000126105 CAMBRIAN//TRILOBITES//BURGESS SHALE
2 0.0000107106 FRASNIAN//DEVONIAN//ATRYPIDA
3 0.0000103199 TABULATA//ARCHAEOCYATHA//HETERACTINIDA
4 0.0000089377 CRYPTOSPORES//EARLY LAND PLANTS//CLADOXYLOPSIDA
5 0.0000089349 GIONYAMA FORMATION//DITOMOPYGINAE//LIFE ASSEMBLAGES
6 0.0000087731 BRABANT MASSIF//GCR SITES//UNIT PALAEONTOL GEOL PEDOL
7 0.0000079951 BRACHIOPODA//LINGULATA//TOMMOTIIDA
8 0.0000068512 PALEOBIOLOGY//COORDINATED STASIS//MACROEVOLUTION
9 0.0000057919 SCOTTISH JOURNAL OF GEOLOGY//JOURNAL OF THE GEOLOGICAL SOCIETY//DALRADIAN
10 0.0000055605 CRINOIDEA//CRINOIDS//STALKED CRINOIDS