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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

Retiolites angustidensAD, Loydell et al. (1997) PŠ705
Retiolites geinitzianusAD, Loydell et al. (1997) PŠ688
Retiolites geinitzianusAD, Loydell et al. (1997), BB685
Retiolites geinitzianusLoydell et. al (1997), text. fig. 3B PŠ706
Retiolites geinitzianusAD, Loydell et al. (1997) BB691
Retiolites geinitzianusAD, Loydell et al. (1997) PŠ707
Retiolites geinitzianus YA2943
Retiolites geinitzianus XB840
Retiolites geinitzianusLoydell et. al. (1997), text. fig. 3C PŠ702
Retiolites geinitzianus JH112
Retiolites geinitzianus JH104
Retiolites geinitzianusAD, Loydell et al. (1997) PŠ704
Retiolites geinitzianusAD, Loydell et al. (1997) PŠ703
Retiolites geinitzianusAD, Loydell et al. (1997) PŠ687
Retiolites geinitzianusAD, Loydell et al. (1997) PŠ689
Retiolites geinitzianus p631
Retiolites geinitzianusAD, Loydell, Štorch a Bates (1997) BB688
Retiolites geinitzianusLoydell et al. (1997), text. fig. 2D BB682
Retiolites geinitzianusAD, Loydell et al. (1997) BB690
Retiolites geinitzianus JH120

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