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This is a rare and  Original nodule of Tullimosntrum gregarium



Tullimonstrum gregarium is an extinct genus of soft-bodied bilaterian that lived in shallow tropical coastal waters of muddy estuaries during the Pennsylvanian geological period, about 300 million years ago. A single species, T. gregarium, is known.Tullimonstrum have been found only in the Mazon Creek fossil beds of Illinois, United States. Its classification has been the subject of controversy, and interpretations of the fossil likened it to molluscs, arthropods, some type of worms and vertebrates.

we base the model reconstructions on the last publication that described tully like  a basal vertebrate, and thus a member of the phylum Chordata.


Tullimosntrum gregarium

Carboniferous Pennsylvanian

Mazon Creek Fossil Bed

Francis Creek Shale


Grundy County






McCoy, Victoria E.; Saupe, Erin E.; Lamsdell, James C.; et al. (April 28, 2016). "The 'Tully monster' is a vertebrate". Nature. 532 (7600): 496–499. doi:10.1038/nature16992. PMID 26982721.


Tullimonstrum gregarium original nodule Mazon Creek

€ 400,00Prezzo
  • nodule size: 7 cm x 4 cm single nodule

    restorations: 0 %

    preparator: n.n

    this fossils is form a very old collection so no restorations or painted parts!

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