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

Eotetragraptus		BB360
Euromonoclimacis radotinensis		BB694
Euromonoclimacis radotinensis		BB680
Euromonoclimacis radotinensis		BB681
Euromonoclimacis radotinensis		BBB675
Euromonoclimacis radotinensis		BBB676
Euromonoclimacis radotinensis		BB695
Euromonoclimacis radotinensis		BB672
Euromonoclimacis radotinensis		BB674
Euromonoclimacis radotinensis		BB683
Euromonoclimacis radotinensis		BB673
Euromonoclimacis radotinensis		BB671
Expansograptus cucullus	Bouček (1973), Pl. II, fig. 3, text. fig 22a	BB79
Expansograptus densus	Bouček (1973), Pl. XIX, fig. 8, text. fig. 12 f, g	BB40
Expansograptus extensus	Bouček (1973), text. fig. 10 b	BB23
Expansograptus extensus	Bouček (1973), text. fig. 10 d	BB24
Expansograptus extensus	Bouček (1973), text. fig. 10 f	BB25
Expansograptus extensus	Bouček (1973), text. fig. 10a	BB33
Expansograptus extensus	Bouček (1973), text. fig. 10 h	BB26
Expansograptus ferrugineus	Bouček (1973), text. fig. 13d	BB43

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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]