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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

Akidograptus ascensus BB606
Akidograptus ascensus p3437
Akidograptus ascensus p432
Akidograptus ascensus p433
Akidograptus ascensusŠtorch (2023), Fig. 6O PŠ4385
Amplexograptus bohemica p5960
Amplexograptus bohemicus VH5182
Anticostia Stewart & Mitchell, 1997 PB1180
Anticostia teres (Perner, 1895) PB1185
Atavograptus atavusŠtorch (1988), Pl. I, fig. 3 PŠ255
Atavograptus atavusŠtorch (1988), Pl. I, fig. 1 PŠ262
Atavograptus atavus PŠ260
Atavograptus atavusŠtorch (1988), Pl. I, fig. 3; text. fig. 2A PŠ261
Atavograptus atavus PŠ259
Atavograptus atavusŠtorch (2023), Fig. 6Q PŠ4366
Aulograptus feistmanteliBouček (1973), text. fig. 22b BB80
Aulograptus feistmanteliBouček (1973), Pl. II, fig. 1, text. fig. 22c, d BB81
Aulograptus feistmanteliBouček (1973), text. fig. 22f BB83
Aulograptus feistmanteliBouček (1973), Pl. II, fig. 2 BB84
Aulograptus feistmanteliBouček (1973), text. fig. 22e BB82

Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]