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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

MetaclimacograptusŠtorch (2001), text. fig. 7, fig. 1 MŠ11654
MetaclimacograptusŠtorch, (2001), Pl. II, fig. 7, text. fig. 7, fig. 4 PŠ1037
Monoclimacis chuchlensis PŠ484
Monoclimacis chuchlensis PŠ487
Monoclimacis chuchlensis PŠ605
Monoclimacis crenularis PŠ834
Monoclimacis crenularisŠtorch (1998), Pl. 9, fig. 2; Text-fig. 6, fig. 3 PŠ697
Monoclimacis crenulata (Elles & Wood, 1911) BB6990
Monoclimacis crenulata (Elles & Wood, 1911) BB6986
Monoclimacis flumendosae BB776
Monoclimacis fumendosae BB623
Monoclimacis griestoniensis (Nicholson, 1850) BB6994
Monoclimacis griestoniensis (Nicholson, 1850) BB6988
Monoclimacis PT30
Monoclimacis BB613
Monoclimacis RH75
Monoclimacis XB825
Monoclimacis RH135
MonoclimacisAD Horný (1956) RH94
Monoclimacis RH130
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]