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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

KoremagraptusKraft (1982), Pl. 11, fig. 2 MŠ7135
Koremagraptus MŠ7082
Koremagraptus MŠ7008
KoremagraptusKraft (1982), Pl. 6, fig. 3; Pl. 10, fig. 1 JK5034
Koremagraptus MŠ7139
Koremagraptus MŠ7006
Koremagraptus JK19403
KoremograptusAD, Kraft (1982) JK5056
Lagarograptus helenaeŠtorch (1988), Pl. XII, fig. 3, text. fig. 4D PŠ274
Lagarograptus tenuisŠtorch (1988), Pl. II, fig. 3, text. fig. 4C PŠ234
Lagarograptus tenuis PŠ277
Lagarograptus tenuis PŠ290
Lagarograptus tenuis PŠ172
Lagarograptus tenuisŠtorch (1988), text. fig. 5C (PŠ 173/1); text. fig. 5B (PŠ 173/2) PŠ173
Lagarograptus tenuisŠtorch (1988), text. fig. 5D PŠ171
LegarograptusŠtorch (1988), Pl. II, fig. 2 (PŠ 254a); text. fig. 4B (PŠ 254b) PŠ254
Leptograptus flaecidus macileutus BB431
Linograptus posthumus p5484
Linograptus posthumus YA2833
Linograptus posthumus SM135
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]