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The oldest synallactid sea cucumber (Echinodermata: Holothuroidea: Aspidochirotida)

Reich, MikeORCIDiD
Journal: Paläontologische Zeitschrift; 844; 2010; p. 541 - 546
DOI: https://doi.org/10.1007/s12542-010-0067-8
Reich, Mike, 2010: The oldest synallactid sea cucumber (Echinodermata: Holothuroidea: Aspidochirotida). In: Paläontologische Zeitschrift, Band 84, 541 - 546, DOI 10.1007/s12542-010-0067-8.
 
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  • Abstract
Aspidochirote holothurian ossicles were discovered in Upper Ordovician-aged Öjlemyr cherts from Gotland, Sweden. The well-preserved material allows definitive assignment to the family Synallactidae, a deep-sea sea cucumber group that is distributed worldwide today. The new taxon Tribrachiodemas ordovicicus gen. et sp. nov. is described, representing the oldest member of the Aspidochirotida. The further fossil record of Synallactidae and evolutionary implications are also discussed.
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