Statements (102)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geologic period
|
| gptkbp:climate |
generally arid
|
| gptkbp:contains |
Cisuralian (epoch)
Guadalupian (epoch) Lopingian (epoch) |
| gptkbp:continent |
gptkb:Pangaea
|
| gptkbp:duration |
about 47 million years
|
| gptkbp:endDate |
approximately 251.9 million years ago
|
| gptkbp:faunalStage |
gptkb:Artinskian
gptkb:Kungurian gptkb:Sakmarian gptkb:Changhsingian gptkb:Capitanian gptkb:Roadian gptkb:Wordian gptkb:Wuchiapingian |
| gptkbp:followedBy |
Triassic (geologic period)
|
| gptkbp:fossil |
well-preserved in Russia and China
|
| https://www.w3.org/2000/01/rdf-schema#label |
Permian (geologic period)
|
| gptkbp:importantRockFormations |
gptkb:Capitan_Reef
gptkb:San_Andres_Formation gptkb:Karoo_Supergroup gptkb:Guadalupe_Mountains gptkb:Beaufort_Group gptkb:Kaibab_Limestone gptkb:Brushy_Canyon_Formation gptkb:Leonardian_Series gptkb:Clear_Fork_Group Cutler Formation Ochoan Series Phosphoria Formation Sakmarian Stage Artinskian Stage Capitanian Stage Changhsingian Stage Chickasha Formation Dunkard Group Guadalupian limestone Kungurian Stage Roadian Stage Word Formation Wordian Stage Wuchiapingian Stage Zechstein |
| gptkbp:lake |
gptkb:Panthalassa
gptkb:Paleo-Tethys_Ocean Zechstein Sea |
| gptkbp:marineLife |
brachiopods
ammonoids |
| gptkbp:marineRegression |
significant
|
| gptkbp:namedAfter |
Perm (city)
|
| gptkbp:namedFor |
gptkb:Sir_Roderick_Murchison
|
| gptkbp:notableEvent |
formation of Pangaea
decline of amphibians expansion of gymnosperms evaporite deposits appearance of early cephalopods appearance of dicynodonts appearance of early archosauriforms appearance of early beetles appearance of early bivalves appearance of early bryozoans appearance of early centipedes appearance of early cockroaches appearance of early corals appearance of early crustaceans appearance of early dragonflies appearance of early echinoderms appearance of early flies appearance of early foraminifera appearance of early gastropods appearance of early millipedes appearance of early radiolarians appearance of early scorpions appearance of early spiders appearance of early sponges appearance of early turtles appearance of gorgonopsians appearance of pareiasaurs coal formation in early Permian development of deserts drying of inland seas evolution of advanced synapsids mass extinction at end of period reduction in shallow marine habitats rise of conifers volcanic activity in Siberian Traps |
| gptkbp:notableSite |
gptkb:South_Africa
gptkb:Ural_Mountains Texas, USA |
| gptkbp:partOf |
gptkb:Paleozoic_Era
|
| gptkbp:precededBy |
Carboniferous (geologic period)
|
| gptkbp:significance |
gptkb:end_of_Paleozoic_Era
largest mass extinction in Earth's history |
| gptkbp:significantEvent |
gptkb:Permian–Triassic_extinction_event
|
| gptkbp:startDate |
approximately 298.9 million years ago
|
| gptkbp:stratotypeLocation |
gptkb:Russia
|
| gptkbp:terrestrialLife |
early reptiles
seed ferns therapsids |
| gptkbp:bfsParent |
gptkb:Pennsylvanian_(formerly)
|
| gptkbp:bfsLayer |
8
|