PERMIAN

Before
1: S
late
2: SU
upper, lower, latest, early, middle, during
After
1: S
reefs, reef, rocks, coal, age, salt, mass, times, time
2: SU
basin, strata, limestone, period, periods, boundary, system
2: US
marine
3: SUU
period, periods, boundary
3: USU
extinction, formations, deposits
Surrounder Phrases
clastic sediments, sedimentary, rocks, deposits, sequences, rock, sequencecarboniferous limestone, limestones, stratigraphy, sandstones, strata, coals, sediments, sandstone, rocks, coal, deposits, boundary, period, era, age, formation, series, timestriassic sandstones, limestones, sandstone, sediments, strata, sedimentary, formations, rocks, carbonate, limestone, boundary, extinction, deposits, basin, beds, succession, period, marine, age, sequence, periods, times, redigneous rocks, rock, masssedimentary basins, rocks, carbonates, strata, formations, rock, basin, deposits, sequences, beds, carbonate, sequence, succession, formation, series, sectioncapitan reefzechstein basin, salt, seapaleozoic sedimentary, stratigraphy, strata, era, rocks, sediments, carbonate, formations, basement, continental, marine, deposits, rock, age, section, timespennsylvanian strata, rocks, coal, period, age, system, timefossil floras, faunas, vertebrates, reptiles, beds, fauna, flora, reefs, reef, deposits, marinereef limestones, carbonates, limestone, marine, formations, sediments, deposits, formation, rock, rocksvolcanic rocks, stratigraphy, rock, formations, deposits, sandstone, strata, sediments, sequences, basement, sequence, succession, formationmass extinctions, extinctioncarbonate sediments, rocks, formations, strata, deposits, sedimentary, rock, beds, sequences, sequence, succession, formationmarine evaporites, sediments, carbonates, faunas, clastic, limestones, fauna, reptiles, fossils, sandstones, sedimentary, vertebrates, carbonate, basins, flora, deposits, strata, limestone, sandstone, basin, fossil, formations, beds, boundarycontinental glaciation, sediments, sedimentary, ice, basins, basement, volcanic, deposits, rocksglacial deposits, stratigraphy, sediments, ice, periods, formations, period, marine, times, era, age, sequencerock formations, strata, salt, mass, basins, formation, beds, sequencessequence stratigraphy, boundarysandstone formations, beds, strata, formation, rocks, rock, deposits, sequencelate paleozoic, triassic, carboniferous, pennsylvanian, glacial, middlelimestone formations, beds, strata, rocks, deposits, rock, reef, formation, coalupper carboniferous, triassic, paleozoic, pennsylvanian, strata, boundary, middle, basin, endred sandstone, sandstones, sea, coals, beds, rock, rockslower carboniferous, paleozoic, triassic, vertebrates, strata, pennsylvanian, boundary, middle, end, bedsbasement rocks, rockuppermost strata, bedsmiddle triassic, pennsylvanian, carboniferous, paleozoic, strata, age, sandstonesfauna floracoal deposits, beds, basins, basin, strata, formationsbasin stratigraphy, sediments, strata, deposits, boundary, formationearly paleozoic, carboniferous, triassic, pennsylvanian, agelatest triassicsea ice, salt, sediments, basin, basins, carbonates, continental, faunaearliest triassic, fossils, vertebrates, times, fossil, strata, periods, period, latestrocks igneous, sedimentarybasal sandstone, sediments, ice, bedsice age, formations, formationsalt deposits, beds, basins, formations, sediments, basin, seanorthern boundaryextinction eventunderlying strata, sediments, basement, limestone, rocks, sandstoneevent stratigraphy, sequencessouthern boundary, texas, end, basinhistorical periods, eventduring periods, glacialformation sandstonestime periods, seriesglaciation duringage stratalater periodstexas southernsediments underlyingstrata underlying