Mascarelli L (3 results)

Brossura. Condition: buone. Estratto dai "Rendiconti della R. Accademia dei lincei. Classe di scienze fisiche, matematiche e naturali. Comunicazioni pervenute all'Accademia durante le ferie del 1915", Vol.XXIV, Serie 5ª, 2º Sem., Fasc.1º, Roma Luglio 1915 Cm.27,9x19,5. Pg.(8). Esemplare intonso. 50 gr.…

La famille des Silesitidae Hyatt, 190 est compos?e d?esp?ce qui se d?veloppent essentiellement dans le Barr?mien. Les travaux concernant cette famille sont souvent tr?s ponctuels et les classifivations propos?es par Karakasch en 1907 et par Fallot en 1920 ne sont pratiquement jamais bas?es, au-del? des ressemblances ornementales, sur les positions stratigraphiques pr?cises des diff?rentes esp?ces barr?miennes, qui ont donc ?t? class?es dans un seul genre, le genre Silesites Uhlig, 1883. Les sp?cimens que nous avons r?colt?s, banc par banc, permettent de mieux comprendre l?volution, parfois discr?te, des esp?ces et des genres barr?miens de cette famille. Ce volume a pour but de compl?ter les donn?es ant?rieures sur cette famille, par la d?finition phylog?n?tique des diff?rents genres du Barr?mien, qui sont constitu?s d?esp?ces connues depuis longtemps dans la litt?rature et d?esp?ces nouvelles qui confirment les sch?mas phylog?n?tiques qui sont propos?s. The family of Silesitidae Hyatt, 190 is composed of species that develop mainly in the Barremian. The publications concerning this family are often very specific and the classifications proposed by Karakasch in 1907 and by Fallot in 1920 are practically never based, beyond ornamental resemblances, on the precise stratigraphic positions of the different Barremian species, which have therefore been classified in a single genus, the genus Silesites Uhlig, 1883. The specimens that we have collected, bank by bank, allow us to better understand the evolution, sometimes discreet, of the Barremian species and genera of this family. This volume aims to complete the previous data on this family, by the phylogenetic definition of the different genera of the Barremian, which consist of species known for a long time in the literature and new species which confirm the phylogenetic schemes that are proposed. 93 pp., 59 figs, 22 tabs, br. 4. …

Brossura. Condition: buone. 2 fascicoli estratti dai "rendiconti della R. Accademia dei Lincei. Classe di scienze fisiche, matematiche e naturali. Comunicazioni pervenute all'Accademia durante le ferie del 1915", Vol. XXIV, Serie 5ª, 2º Sem., Fasc.1° e 2º, Roma Luglio 1915. Cm.27,7x19,5. Pg.(8, 8). Esemplari intonsi. Illustrazioni nel testo. 50 gr. …