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

Corymbograptus		BB372
Corymbograptus		BB355
Corymbograptus		CW1295
Corymbograptus		CW1296
Corymbograptus		KOS707
Corymbograptus uniformis		BB401
Corymbograptus uniformis	Bouček (1973), Pl. VII, fig. 5, text. fig. 15a	BB50
Corymbograptus uniformis		BB402
Corymbograptus uniformis	Bouček (1973), Pl. VII, fig. 6, text. fig. 15b, c	BB51
Corymbograptus uniformis		BB378
Corymbograptus uniformis		BB406
Corymbograptus uniformis		BB304
Corymbograptus v-similis		XA774
Corymbograptus v-similis		BB323
Corymbograptus v-similis	Bouček (1973), Pl. VII, fig. 1, 2, text. fig. 15	BB53
Corymbograptus v-similis		XA773
Corymbograptus v-similis	Bouček (1973), Pl. VII, fig. 3	BB54
Corymbograptus v-similis	Bouček (1973), Pl. VII, fig. 4, text. fig. 15d	BB52
Corymbograptus v-similis		XA357
Cryptograptus	Bouček (1973), Pl. XXII, fig. 8	BB163

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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]