| Graptolithina
Graptolithina is the a class in the animal phylum Hemichordata, the members of which are known as Graptolites. Graptolites are fossil colonial animals known chiefly from the Upper Cambrian through the Lower Carboniferous (Mississippian). A possible early graptolite, Chaunograptus, is known from the Middle Cambrian.
The name graptolite comes from the Greek graptos, meaning "written", and lithos, meaning "rock", as many graptolite fossils resemble hieroglyphs written on the rock. Linnaeus originally regarded them as 'pictures resembling fossils rather than true fossils', though later workers, supposed them to be related to the hydrozoans.[citation needed] More recent work places them near the pterobranchs, possibly within.
Sources: http://en.wikipedia.org/wiki/Graptolite
On-line reference: Benton a Harper: Introduction to the Paleobiology
Zdroj: Benton a Harper: Introduction to the Paleobiology   | Petalolithus clandestinus | | | | MŠ11610 | | Petalolithus conicus | | | | p1450 | | Petalolithus folium | | | | PŠ727 | | Petalolithus folium | Štorch (1998), Pl. 4, fig. 4; Text-fig. 5, fig. 2D | | | PŠ730 | | Petalolithus folium | Štorch (1998), Text-fig. 5, fig. 2B | | | PŠ791 | | Petalolithus folium | Štorch (1998), Pl. 4, fig. 6 (kus 1); Text-fig. 4, fig. 9 (kus 2) | | | PŠ804 | | Petalolithus folium | Štorch (1998), Pl. 4, fig. 1; Text-fig. 5, fig. 2C | | | PŠ821 | | Petalolithus folium | | | | PŠ733 | | Petalolithus folium | Štorch (1998), Pl. 4, fig. 10; Text-fig. 5, fig. 2A | | | BB6970 | | Petalolithus folium | | | | PŠ795 | | Petalolithus folium | Štorch (1998), Pl. 4, fig. 8 | | | PŠ773 | | Petalolithus folium | Štorch (2023), Fig. 10F | | | PŠ4372 | | Petalolithus krizi Štorch, 1998 | Štorch (1998), Pl. 5, fig. 6; Text-fig. 5, figs. 4B | | | PŠ781 | | Petalolithus krizi Štorch, 1998 | Štorch (1998), Pl. 5, fig. 10.; Text-fig. 5, fig. 4A | | | PŠ796 | | Petalolithus ovatus | | | | p3845 | | Petalolithus praecursor | Štorch (1998), Pl. 4, fig. 5; text-fig. 5, fig. 1B (kus 2 je originál) | | | PŠ711 | | Petalolithus praecursor | Štorch (1998), Text-fig. 5, fig. 1E | | | PŠ915 | | Petalolithus praecursor | | | | PŠ853 | | Petalolithus praecursor | | | | PŠ826 | | Petalolithus praecursor | Štorch (1998), Pl. 4, fig. 2; Text-fig. 5, fig. 1D (kus 1); Pl.4, fig. 7, text-fig. 5, fig 1C (kus2) | | | PŠ801 |
|
![[ENG]](img/vlajka-cr.gif)
Èesky 
Previous