Editing A sequence-stratigraphy scheme of the Late Carboniferous, southern North Sea, Anglo-Dutch sector

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! Chronostratigraphy !! Onshore lithostratigraphy !! Non-marine bivalve zone !! Systems tract !! Base age (approx. Ma) !! Lower boundary !! Lithofacies !! Palynol. zone !! Palynofloras
 
! Chronostratigraphy !! Onshore lithostratigraphy !! Non-marine bivalve zone !! Systems tract !! Base age (approx. Ma) !! Lower boundary !! Lithofacies !! Palynol. zone !! Palynofloras
 
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| Westphalian D || Warwickshire Group || ''A. tenuis'' || TST/?LST/ ?HST || 300 || Top of highest West C sandst. || Crevasse splay mdst / sltsts and low sinuosity channel ssts || OT || Appearance of ''T. obscura'', ''T. pseudothiesseni'' and ''C. magna'' plus increase in ''Disacciti striatiti''
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| Westphalian D || Warwickshire Group || A. tenuis || TST/?LST/ ?HST || 300 || Top of highest West C sandst. || Crevasse splay mdst / sltsts and low sinuosity channel ssts || OT || Appearance of ''T. obscura'', ''T. pseudothiesseni'' and ''C. magna'' plus increase in ''Disacciti striatiti''
 
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| Westphalian C (Bolsovian)  || Upper Coal Measures Formation || ''A. phillipsi'' || LST || 302 || Cambriense MB || Major low and high sinuosity channel ssts with crevasse/ lake/swamp intervening || Upper SL || Highest acme of ''C. kosankei''. Extinction of ''D. sphaerotriang''., ''V. costata'', ''V. pseudoreticulata'', ''S. nux'', ''D. falsus'' and ''G. varioreticulatus''. Appearance of ''S. dimorphus'', ''V. laevigata''
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| Westphalian C (Bolsovian)  || Upper Coal Measures Formation || A. phillipsi || LST || 302 || Cambriense MB || Major low and high sinuosity channel ssts with crevasse/ lake/swamp intervening || Upper SL || Highest acme of ''C. kosankei''. Extinction of ''D. sphaerotriang''., ''V. costata'', ''V. pseudoreticulata'', ''S. nux'', ''D. falsus'' and ''G. varioreticulatus''. Appearance of ''S. dimorphus'', ''V. laevigata''
 
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|  || Middle Coal Measures Formation || U. ''similis-puchra'' || HST || 305 || Aegiranum MB || Crevasse splay mdsts/slsts, some sst bodies || Lower SL || Common ''Lycospora'' spp. & ''C. kosankei''. Extinction ''C. loricatus''. Appearance of ''V. fenestrata, T. securis, T. bransonii'' & ''P. granifer''
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|  || Middle Coal Measures Formation || U. similis-puchra || HST || 305 || Aegiranum MB || Crevasse splay mdsts/slsts, some sst bodies || Lower SL || Common ''Lycospora'' spp. & ''C. kosankei''. Extinction ''C. loricatus''. Appearance of ''V. fenestrata, T. securis, T. bransonii'' & ''P. granifer''
 
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| Westphalian B (Duckmantian) ||  || L. ''similis-pulchra'' || TST || 307.5 || Top Hard (Barnsley) Coal || Swamp/lake mdsts with common coals and marine bands in the upper part. Local high sinuosity ssts || Upper NJ || Common ''Lycospora'' spp. and ''Densosporites'' spp. Appearance of ''V. pseudoreticulata, P. granifer'', ''Triquitrites'' spp., ''P. perinatus'' & ''C. solaris'' Extinction ''R. fulva'', ''D. bireticul''. & ''C. bucculentus''
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| Westphalian B (Duckmantian) ||  || L. similis-pulchra || TST || 307.5 || Top Hard (Barnsley) Coal || Swamp/lake mdsts with common coals and marine bands in the upper part. Local high sinuosity ssts || Upper NJ || Common ''Lycospora'' spp. and ''Densosporites'' spp. Appearance of ''V. pseudoreticulata, P. granifer'', ''Triquitrites'' spp., ''P. perinatus'' & ''C. solaris'' Extinction ''R. fulva'', ''D. bireticul''. & ''C. bucculentus''
 
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|  ||  || U. ''A. modiolaris'' || LST/HST || 310 || Vanderbeckei MB || Well developed low sinuosity ssts with some mouth bar and crevasse splay units || Lower NJ || Common ''Crassispora kosankei, Vestispora costata'' and ''Laevigatosporites'' spp. Appearance of ''D. bireticulatus'' and ''Endosporites globiformis''
 
|  ||  || U. ''A. modiolaris'' || LST/HST || 310 || Vanderbeckei MB || Well developed low sinuosity ssts with some mouth bar and crevasse splay units || Lower NJ || Common ''Crassispora kosankei, Vestispora costata'' and ''Laevigatosporites'' spp. Appearance of ''D. bireticulatus'' and ''Endosporites globiformis''

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