. Bulletin of the Natural Histort Museum. Geology series. ARGOVEJO [^:jrEC-;x "MN(na) â Shale r~t Red Sandstone â¡ Sandstone 0 Doiomtte [^ Sandstone & Shale 0 Limestones ^ Sandstone/Oolites H Ouartzites ^ Ferrous Oolites *JK -^ Phosphatic nodules / Clasts â â Spore z«nal ho undii ry Silurian/Dc vuni an boundary based on Chitinozoa â Pâpâ Pridoli Stage bou ndar> based on chitinozuans data SriAGES. ?Hom. Fig. 6 Correlation of Cantabrian sections. Spore zonation new, except for LP Biozones after Richardson & McGregor (1986). MN Biozone after Holland & Richardson (1977) and Ri
. Bulletin of the Natural Histort Museum. Geology series. ARGOVEJO [^:jrEC-;x "MN(na) â Shale r~t Red Sandstone â¡ Sandstone 0 Doiomtte [^ Sandstone & Shale 0 Limestones ^ Sandstone/Oolites H Ouartzites ^ Ferrous Oolites *JK -^ Phosphatic nodules / Clasts â â Spore z«nal ho undii ry Silurian/Dc vuni an boundary based on Chitinozoa â Pâpâ Pridoli Stage bou ndar> based on chitinozuans data SriAGES. ?Hom. Fig. 6 Correlation of Cantabrian sections. Spore zonation new, except for LP Biozones after Richardson & McGregor (1986). MN Biozone after Holland & Richardson (1977) and Richardson & McGregor (1986), and BV Biozone after Burgess & Richardson (1995); MN: micromatus - newportensis, (na): newportensis - argovejae Subzone, (a): Aneurospora Subzone, EC: elegans - cantabrica, H: RS: reticulata - sanpetrensis, LP: libycus - polymorpha. BV: brevicosta - verrucatus, V: vetusta. Key Cantabrian chitinozoan taxa: Ac: Angochitina chliipaci Lochkovian. Ae: Angochitina echinata Mid Gorstian - Lower Pfi'dolf, AI: Ancyrochitina libyensis Late Gorstian? - Lower Pvridoli, Ath: Angochitina thadeui Lower Gorstian-Late Ludfordian. At: Angochitina tsegelnnki Lochkovian, Cb: Cyathochitina sp. B Late Llandovery, Cr: Conochitina nidda Late Homerian-Lower Ludfordian, Eb: Eisenackitina bohemica Lochkovian, Me: Margachititia elegans Mid Pi'idolf. Pc: Pseitdoclathrochitina carmenchui Mid Pfi'doli, Rv: Ramochitina villosa Late Ludfordian, Ss: Sphaemchitina sphaemcephala Mid Gorstian to Lower PiTdoli, S: Spinachitina sp. Llandovery?, Uu: Umachitina iirna Pfidoli- earliest Lochkovian. Artemopyra brevicosta - Hispanaediscus verrucatus (BV) Spore Biozone (Burgess & Richardson 1995). Both the nominal species are found in samples LP3 and LP5. The fact that Hispanaediscus lamontii also occurs in the latter sample may indicate that the junction between the A. brevicosta and H. lamontii Sub-Biozones lies between these two samples. In south Wales th
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