DEVONIAN

Before
1: S
late, great
2: SU
upper, middle, lower, latest, early
After
1: S
shale, reefs, reef, rocks, age, fish, plants, times, time
2: SU
strata, limestone, boundary, period, periods, system
3: SUU
carbonates, carbonate, boundary, period, periods
3: USU
formations, deposits
4: SUUU
controversy
Surrounder Phrases
tetrapod vertebratesclastic sediments, sedimentary, rocks, deposits, sequences, rock, sequencecarboniferous limestone, limestones, stratigraphy, sandstones, strata, sediments, sandstone, rocks, deposits, boundary, period, era, age, formation, series, times, systemsedimentary basins, rocks, carbonates, strata, formations, rock, basin, deposits, sequences, beds, carbonate, sequence, succession, formation, series, sectionsilurian strata, fossils, rocks, sediments, boundary, deposits, period, age, system, timespaleozoic sedimentary, stratigraphy, strata, era, rocks, sediments, carbonate, formations, basement, marine, deposits, rock, age, section, times, timereef fishes, limestones, carbonates, limestone, fish, marine, formations, sediments, deposits, formation, rock, rocksvolcanic rocks, stratigraphy, rock, formations, deposits, sandstone, strata, sediments, sequences, basement, sequence, succession, formation, seriescarbonate sediments, rocks, formations, strata, deposits, sedimentary, rock, beds, sequences, sequence, succession, formationoil shale, shales, deposits, saltmississippian strata, rocks, period, age, timesrock formations, strata, salt, gardens, mass, basins, formation, beds, sequences, reef, limestone, basin, depositssequence stratigraphy, boundarysandstone formations, beds, shale, strata, formation, rocks, rock, deposits, sequence, seriesmarine sediments, carbonates, shales, clastic, fishes, limestones, fossils, sandstones, sedimentary, shale, vertebrates, carbonate, basins, flora, deposits, strata, fish, limestone, sandstone, basin, plants, fossil, formations, beds, boundary, rocks, sequencesfossil vertebrates, fishes, beds, spores, flora, reefs, reef, deposits, plants, fish, marine, forms, plantlate paleozoic, carboniferous, silurian, mississippian, middlelimestone formations, beds, strata, shale, rocks, deposits, rock, reef, formation, sequenceupper carboniferous, silurian, paleozoic, strata, mississippian, boundary, middle, basin, sandstone, limestoneshale beds, fossils, formations, oil, sandstone, deposits, sequences, formation, rock, sequencered sandstone, sandstones, sea, shales, shale, beds, rock, rockslower carboniferous, silurian, paleozoic, vertebrates, strata, mississippian, boundary, middle, beds, basinbasement rocks, rockuppermost strata, beds, sectionblack shales, shale, sea, mississippian, slates, rock, volcanic, seas, rocksmiddle mississippian, carboniferous, paleozoic, silurian, strata, age, sandstonesbasin stratigraphy, sediments, strata, deposits, boundary, formationmass extinctionearly paleozoic, tetrapods, carboniferous, silurian, mississippian, age, period, middlesea salt, sediments, basin, fishes, basins, carbonates, oil, fish, sedimentaryplant fossils, succession, formations, spores, gardens, bedssalt deposits, beds, basins, formations, fish, sediments, basin, sea, seasearliest fossils, vertebrates, times, fossil, strata, periods, epoch, period, forms, latestold ageunderlying strata, sediments, basement, limestone, rocks, sandstone, formations, rockfish oil, fossilsgreat basin, salt, controversy, epoch, massland vertebrates, mass, formations, plantsrocks sedimentaryduring periodsformation sandstones, sandstonetime periods, series, period, depositsage stratasediments underlyingstrata underlyingtimes duringmid upper, sectionperiods duringboundary beds, controversyperiod during