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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

Cyrtograptus perneri BB622
Cyrtograptus perneriAD Manda (1996) YA2780
Cyrtograptus perneri p413
Cyrtograptus perneriŠtorch (1994a), Fig. 7F; Štorch (2023), Fig. 18D PŠ561
Cyrtograptus perneri p468
Cyrtograptus radiansŠtorch (2023), Fig. 20L PŠ4396
Cyrtograptus ramosus Bouèek, 1931Štorch (2023), Fig. 18E - PŠ4358 a PŠ4358
Cyrtograptus rigidus p3445
Cyrtograptus rigidusŠtorch (1994a), Fig. 7G; Štorch (2023), Fig. 18C PŠ565
CyrtograptusAD Manda et al. (2019) PŠ3891
Cyrtograptus KP1125
Cyrtograptus KP1162
CyrtograptusŠtorch et al. (1984), Pl. I, fig. 3 PŠ192
Cyrtograptus JH141
CyrtograptusAD Manda et al. (2019) PŠ3889
Cyrtograptus p5001
Cyrtograptus KP1166
Cystograptus ancestralisŠtorch (2023), Fig. 6C PŠ4387
Cystograptus ancestralisŠtorch (1985), Pl. IV, fig. 2, text. fig. 3H PŠ69
Cystograptus ancestralisŠtorch (1985), Pl. 4, fig. 5, 3 PŠ158
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]