A synopsis of the characters of the Carboniferous limestone fossils of Ireland - McCoy, Frederick, 1817 -1899 (Printed at the University Press by M.H. Gill, 1844)

Synopsis of the classification of the animal kingdom - Nicholson, Henry Alleyne, 1844 -1899 (W. Blackwood, 1882)

A synopsis of the classification of the British Palæozoic rocks / by the Rev. Adam Sedgwick ; With a systematic description of the British Palæozoic fossils in the Geological museum of the University of Cambridge, by Frederick McCoy - Salter, John William, 1820 -1869 (J.W. Parker and Son; [etc.], 1851)

A synopsis of the classification of the fresh-water Mollusca of North America, north of Mexico, and a catalogue of the more recently described species - Walker, Bryant, 1856 -1936 (The University, 1918)

Synopsis of the contents of Gesner's Museum of Natural History at Saint John, N.B. opened on the fifth day of April, 1842 - Gesner's Museum of Natural History. (s.n.], 1842)

Synopsis of the contents of the British Museum - British Museum ([the Museum], 1854)

Synopsis of the contents of the British Museum - British Museum (G. Woodfall and Son, 1852)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1847)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1844)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1846)

Synopsis of the contents of the British Museum - British Museum (Printed by Woodfall and Kinder, 1853)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1848)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1851)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1850)

Synopsis of the contents of the British Museum - British Museum (Woodfall, 1842)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1824)

Synopsis of the contents of the British Museum - British Museum ([the Museum], 1823)

Synopsis of the contents of the British Museum - British Museum ([The Museum], 1827)

Synopsis of the contents of the British Museum - British Museum (printed by Woodfall, 1837)

Synopsis of the contents of the British Museum - British Museum (printed by G. Woodfall, 1839)

Synopsis of the contents of the British Museum - British Museum (printed by G. Woodfall, 1838)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1838)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, Angel Court, Skinner Street, 1840)

Synopsis of the contents of the British Museum - British Museum (printed by G. Woodfall, 1837)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1835)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, Angel Court, Skinner Street, 1836)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, Angel Court, Skinner Street, 1840)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1845)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1849)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1826)

Synopsis of the contents of the British Museum - British Museum (Woodfall, 1841)

Synopsis of the edible fishes at the Cape of Good Hope - Pappe, L. (Ludwig), 1803 -1862 (Van de Sandt de Villiers & Tier, 1853)

Synopsis of the mollusca of the Cretaceous formation, including the geographical and stratigraphical range and synonymy - Gabb, William More 1839 -1878 (s.n.], 1861)

Synopsis, or guide book to the British Museum - Gray, John Edward 1800 -1875 (1843)

A synoptical table of British organic remains : in which, all the edited British fossils are systematically and stratagraphically arranged, in accordance with the views of the geologists of the present day; and a reference given to their localities, strata, and engraved figures : accompanied by a lithograph of the fossil turtle in the Norfolk and Norwich Museum - Woodward, Samuel, 1790 -1838 (Longman, Rees, Orme, Brown, and Green; and John Stacy, Norwich, 1830)

System der urweltlichen Konchylien : durch Diagnose, Analyse und Abbildung der Geschlechter erläutert - Bronn, H. G. (Heinrich Georg), 1800 -1862 (J.C.B. Mohr, 1824)

A system of geology with a theory of the earth : and an explanation of its connexion with the sacred records - Macculloch, John, 1773 -1835 (Longman, Rees, Orme, Brown, and Green, 1831)

Systema helminthum / auctore Carolo Mauritio Diesing ... Sumptibus Academiae caesareae scientiarum - Diesing, Karl Moritz, 1800 -1867 (W. Braumüller, 1851)

Systema naturæ in quo naturae regna tria, secundum classes, ordines, genera, species, systematice, proponuntur - Linné, Carl von, 1707 -1778 (Apud G. Kiesewetter, 1740)

Systema naturae per regna tria naturae : secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis - Linné, Carl von, 1707 -1778 (Typis Ioannis Thomae, 1767)

Systema naturae, per regna tria naturae : secundum classes, ordines, genera, species cum characteribus, differentiis, synonymis, locis - Linné, Carl von, 1707 -1778 (Typis Ioannis Thomae, 1767)

Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis - Linné, Carl von, 1707 -1778 (Typis Ioannis Thomae von Trattner, 1767)

Systema natvræ per regna tria natvræ : secvndum classes, ordines, genera, species, cvm characteribus, differentiis, synonymis, locis - Gmelin, Johann Friedrich, 1748 -1804 (Typis Academicis, 1793)

Systema natvrae per regni tria natvrae secvndvm classes, ordines, genera, species, cvm characteribvs, differentiis, synonymis, locis - Linné, Carl von, 1707 -1778 (Io. Iac. Cvrt, 1760)

Systematic arrangement of the figures - Gray, John Edward 1800 -1875 (Longman, Brown, Green and Longmans?, 1850?, 1850)

Systematic list of the Frederick E. Edwards collection of British oligocene and eocene Mollusca in the British Museum (Natural History), with references to the type-specimens from similar horizons contained in other collections belonging to the Geological Department of the Museum - British Museum (Natural History). Department of Geology. (Printed by order of the Trustees, 1891)

Systematics of the family Nassariidae (Mollusca:Gastropoda) - Cernohorsky, Walter Oliver. (Auckland Institute and Museum, 1984)

Systematische Abhandlung über die Erd- und Flussconchilien welche um Augsburg und der um liegenden Gegend gefunden werden : als ein Beytrag zur vaterländischen Naturgeschichte - Alten, Johann Wilhelm von, 1770 -1854 (Gedruckt auf Kosten des Verfassers, auch bey demselben und in Commission bey Joh. Jak. Palm in Erlangen, zu haben, 1812)

Systematische Eintheilung der Land- und Fluss-Weichthiere nach ihren wesentlichen Kennzeichen, vorzuglich von der Schale : (Aus Histoire naturelle des Mollusques terrestres et fluiratiles de la France. Par Jacq. Philipp Raym. Deraparnaud.) - Sturm, Jakob, 1771 -1848 ([Gedruckt auf Kosten des Herausgebers], 1815)

Systematische phylogenie - Haeckel, Ernst, 1834 -1919 (Georg Reimer, 1896)

Die systematische Stellung der Solenogastren und die Phylogenie der Mollusken - Thiele, Johannes, 1860 -1935 (W. Engelmann, 1902)

Systematisches Conchylien-Cabinet - Kobelt, Wilhelm, 1840 -1916 (Bauer und Raspe, 1837)

Systematisches Conchylien-Cabinet - Kobelt, Wilhelm, 1840 -1916 (Bauer und Raspe, 1862)

Systematisches Conchylien-Cabinet - Kobelt, Wilhelm, 1840 -1916 (Bauer und Raspe, 1846)