Memoirs of the New York State Museum Volume 11 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ... the broader diagnosis in the fl/orzograjb/1 of Brz'lz's/1 G2'apto z' os which embraces forms with simple and compound secondary branches. The paired branching, which is concentrated in the proximal portion of the main stipes and the leptograptid type of the thecae are distinctly shown in the enlargements here given of the type specimen of the genotype see Amphigraptus divergens (Hall) Plate 15, figure 1 Graptolithus divergens Hall. Pal. N. Y. 1859. 3:509, fig. 9 Graptolith us divergens Hall. N. Y. State Cab. Nat. Hist. 12th An. Rep't. 1859. P-57 fis 9 Graptolithus divergens Hall. Can. Org. Rem. Dec. 2, 1865. p.121', fig. 11 Graptolithus (Coenograptus) divergens Hall. N. Y. State Cab. Nat. Hist. 20th An. Rep't. 1868. p.179, fig. 12 Amphigraptiis divergens Lapworth. Geol. Mag. 1873. 1o:559 Amphigraptus divergens Lapworth. Cat. West. Scott. Foss. 1876. p.5; pl. 1, fig. 70 Am p higraptus divergens Lapworth. Quar. _our. Geol. Soc. 1878. 34:331 Amphigraptus divergens Lapworth. Ann. & Mag. Nat. Hist. 1880. 6:18 Graptolithus divergens Walcott. Alb. Inst. Trans. v. 10. 1883. (Advance p.184 Amphigraptus divergens Walcott. Geol. Soc. Am. Bul. 1890. 1:338 Coenograptus (P Pleurograptus, ? Pterograptus) divergens Roemer & Frech. Lethaea Pal. 1897. 1: 587 Amphigraptus divergens Elles 8: Wood. Monogr. Brit. Grapt. pt 3. 1903. p.122; pl. 18, fig. 1 Descrzptzbrz. Rhabdosome of medium size, consisting of two straight or but slightly curved main stipes, diverging at about 180 from the sicula and several (as many as five) pairs of secondary branches, all of which are produced in close proximity to the centre. The main and secondary branches are thick (.8 mm--1 mm wide) of uniform width and rigid appearance. The sicula and primary...