Smith fossils1

Autor:

William Smith (1769–1839)

Credit:

Plate 1 in: Strata identified by organized fossils, containing prints on colored paper of the most characteristic specimens in each stratum. Part 2 (1st October 1816). W. Arding, London, doi:10.5962/bhl.title.106808.

Krótki link:

https://www.plwiki.pl/b/3f1b5

źródło:

Wikimedia Commons

Wymiary:

1942 x 1400 Pixel (3541780 Bytes)

Opis:

Historical plate showing fossils that characterize the Lower Chalk, i.e. the relatively soft white limestones of the lower Upper Cretaceous of England. This plate comes from the fundamental biostratigraphical work of the pioneer of modern Geology William Smith. Note that the names of the fossil taxa may have changed since, mainly in a way, that the historical genus concepts subsequently changed over to family or even higher-ranked taxa. For example, all bivalves referred to as “Inoceramus” in the plate today are considered members of the family Inoceramidae but may be assigned to different genera than Inoceramus. The inoceramid bivalve in figure 2 quite surely represents an elongated form of the genus Mytiloides (erected by Brongniart in 1822). Figure 1 shows a detail or a fragment of the hinge area of a large inoceramid shell (here referred to as „Inoceramus Cuvieri “ with reference to the first formal but rather brief description of an inoceramid species by George Sowerby I in Thomson’s Annals of Philosophy, Vol. 4.^[1] The genus “Ammonites” (figure 4) is not even used anymore in ammonite taxonomy.^[2]

Licencja:

Public domain