| 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   | Lituigraptus richteri | | | | PŠ868 | | Lituigraptus richteri | | | | PŠ867 | | Lituigraptus richteri | Štorch (1998), Pl. 16, fig. 5 | | | BB6930 | | Lituigraptus richteri | Štorch (1998), Pl. 17, fig. 5; Text-fig. 11, fig. 6A | | | PŠ759 | | Lituigraptus richteri | | | | PŠ866 | | Lituigraptus richteri | Štorch (1998), Pl. 17, fig. 2 | | | PŠ715 | | Lituigraptus richteri | Štorch (1998), Pl. 8, fig. 5 (kus oznaèený jako 1); Pl. 7, fig. 7 (kus oznaèený jako 2) | | | PŠ810 | | Lituigraptus richteri | Štorch (1998), Text-fig. 11, fig. 6D | | | PŠ749 | | Lituigraptus richteri | ?torch (1998), Pl.8, fig. 3 | | | PŠ728 | | Lituigraptus richteri | Štorch (1998), Pl.16, fig. 1 | | | PŠ805 | | Lituigraptus richteri | Štorch (1998), Pl. 17, fig. 6; text-fig. 11, fig. 6C | | | PŠ528 | | Lituigraptus | | | | RH50 | | Maetaclimacograptus | | | | MŠ14469 | | Mediograptus Bouèek & Pøibyl in Pøibyl, 1948 | | | | YA2944 | | Medusaegraptus crinitus | | | | JH146 | | Metabolograptus parvulus (Lapworth, 1900) | Štorch (1983a), PL. 4, fig. 4(PŠ56-2), Text-fig. 2O (PŠ56-1) | | | PŠ56 | | Metabolograptus parvulus (Lapworth, 1900) | AD Štorch (1983a) | | | PŠ52 | | Metaclimacograptus bohemicus | Štorch (1998), Pl. 1, fig. 8.; Text-fig. 4, fig. 2 | | | PŠ832 | | Metaclimacograptus hughesi | Štorch (1998), Pl. 1, fig. 1; Pl. 2, fig. 2; Text-fig. 4, fig. 3A | | | PŠ743 | | Metaclimacograptus hughesi | | | | PŠ827 |
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