WILLIAMS, S.H.

Upper Ordovician graptolites from the D. complanatus Zone of the Moffat and Girvan districts and their significance for correlation.

1987. Scott. J. Geol. 23; pp. 65-92, 8 fig./plts. Orig. extract, stapled, very good.

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WILLIAMS, M. AND J. ZALASIEWICZ

The Wenlock Cyrtograptus species of the Builth Wells district, central Wales.

2004. Palaeontology 47; pp. 223-263, 12 fig. Orig. extract, stapled, very good.

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WILLIFERT, S.

Graptolites du Silurien et du Lochkovien de Touchchent (anticlinorium de Kasba-Tadla-Azrou, Maroc central).

1963. Extract Notes Serv. géol. Maroc 23-172; pp. 69-98, 24 fig. 2 plts. h.t. No wrps. stapled.

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WOOD, E.M.R.

The Lower Ludlow Formation and its graptolite fauna.

1900. Quart. J. geol. Soc. LVI-2; pp. 415-490, 27 fig. 2 fold-out tables, 1 fold-out map, 1 pl. h.t. with graptolites. Orig. extract, plain new wrps. very good, uncut.

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YUAN-DONG ZHANG & R. A. FORTEY

The Proximal Development and Thecal Structure of the Ordovician Graptolites Tylograptus and Sinograptus.

2001. Palaeontology 44; pp. 553-573, 5 fig. 1 pl. Stapled extract.

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ZALASIEWICZ, JAN AND MARK WILLIAMS

Graptolite biozonation of the Wenlock Series (Silurian) of the Builth Wells district, central Wales.

1999. Geological Magazine 136; pp. 263-283, illustr. Orig. extract, 4to.

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ZALASIEWICZ, J.

Middle to late Telychian (Silurian: Llandovery) graptolite assemblages of central Wales.

1994. Palaeontology 37; pp. 375–396, 8 fig. Stapled extract.

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ZALASIEWICZ, JAN AND STEVE TUNNICLIFF

Uppermost Ordovician to Lower Silurian graptolite biostratigraphy of the Wye valley, central Wales.

1994. Palaeontology 37; pp. 695–720, 10 fig. Stapled extract.

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ZHANG YUANDONG & BERND -D. ERDTMANN

Tremadocian (Ordovician) biostratigraphy and graptolites at Dayangcha (Baishan, Jilin, NE China).

2004. Paläontologische Zeitschrift 78; pp. 323-354, 14 fig./plts. Orig. extract, stapled, very good, 4to.

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