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

Pristiograptus variabilis	Štorch, (2001), text. fig. 7, fig. 17, 18	PŠ1038
Pristiograptus vulgaris		p1759
Prochnygraptus crispus	Štorch (1985), Pl. II. fig. 1	PŠ213
Prochnygraptus singularis	Přibyl a Štorch (1985), text. fig. 3c, Pl. II, fig. 2	PŠ218
Prochnygraptus singularis	Přibyl a Štorch (1985), text. fig. 3a	PŠ217
Prochnygraptus singularis	Přibyl a Štorch (1985), text. fig. 3b	PŠ219
Prochnygraptus singularis		PT30
Pseudoclimacograptus hughesi		BB650
Pseudoclimacograptus hughesi		BB643
Pseudoclimacograptus hughesi		BB644
Pseudoclimacograptus hughesi		BB645
Pseudoclimacograptus hughesi		BB647
Pseudoclimacograptus hughesi		BB651
Pseudoclimacograptus		BB646
Pseudoclimacograptus (Undulograptus) jaroslavi	Bouček (1973), text. fig. 37	BB150
Pseudoclimacograptus (Undulograptus) jaroslavi	Bouček (1973), Pl. XXI, fig. 7, Pl. XXII, fig. 7	BB149
Pseudoclimacograptus (Undulograptus) klabavensis	Bouček (1973), Pl. XXII, fig. 6, Pl. XXI, fig. 1	BB151
Pseudoclimacograptus (Undulograptus) klabavensis		BB233
Pseudoclimacograptus (Undulograptus) klabavensis		BB287
Pseudoclimacograptus (Undulograptus) klabavensis	Bouček (1973), Pl. XXI, fig. 3	BB153

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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]