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

Palaeodictyota		p5949
Palaeodictyota textorium		p5555
Palaeodictyota textorium		p5556
Palaeodictyota textorium		p5566
Palaeodictyota textorium		p5951
Palaeodictyota textorium		p5942
Palaeodictyota undulatum		p5562
Palaeodictyota undulatum		p5575
Palaeodictyota undulatum		p5947
Paleodictyota undulatum		JH132
Paradiversograptus rectus	Štorch, (2001), Pl. II, fig. 5, text. fig. 10, fig. 2	PŠ1061
Paradiversograptus rectus	Štorch, (2001), Pl. II, fig. 3, text. fig. 10, fig. 1	PŠ1062
Parakidograptus acuminatus	Štorch (1983b),Pl. 2, fig. 4 (PŠ75-1)	PŠ75
Parakidograptus acuminatus	Štorch (1983b), PL. 2, figs. 1,2; Text-fig. 1I,J	PŠ127
Parakidograptus acuminatus	AD Štorch (1983b)	PŠ112
Parakidograptus acuminatus	AD Štorch (1983b)	PŠ113
Parakidograptus acuminatus	Štorch (1983b), PL. 1, fig. 8; Text-fig. 1M (PŠ110-1)	PŠ110
Parakidograptus acuminatus	Štorch (1983b), PL. 1, fig. 4; PL. 2, fig. 3; Text-fig. 1E (PŠ67-2)	PŠ67
Parakidograptus acuminatus	AD Štorch (1983b)	PŠ115
Parakidograptus acuminatus	AD Štorch (1983b)	PŠ114

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