A giant conodont with preserved muscle tissue from the Upper Ordovician of South Africa

  title={A giant conodont with preserved muscle tissue from the Upper Ordovician of South Africa},
  author={Sarah E. Gabbott and Richard J. Aldridge and Johannes N. Theron},
AN exceptionally preserved new specimen of the giant conodont Promissum pulchrum reveals details of the trunk musculature, feeding apparatus and eyes. High-fidelity resolution of ultrastruc-tural features of the trunk myomeres provides the first conclusive evidence of muscle-fibre organization and orientation in an extinct agnathan. The presence of fibrous extrinsic eye muscles confirms the degree of encephalization of the conodonts and is consistent with a cladistic position crownwards of the… 
Pseudooneotodus: a histological study of an Ordovician to Devonian vertebrate lineage
  • I. Sansom
  • Geography, Environmental Science
  • 1996
Detailed histological investigations have shed new light on the nature of Pseudooneotodus Drygant, 1974, showing a differentiation into a lamellar cap, indistinguishable from vertebrate enamel, which is underlain by a spherulitic basal tissue with several characters indicative of dentine.
The conodont controversies.
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Hard tissue histology is reviewed paying particular attention to the relationships during growth of the component hard tissues comprising conodont elements, and ignoring a priori assumptions of the homologies of these tissues, in order to address the problem of established hypotheses of element growth.
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Elements of a new Triassic conodont genus Parapachycladina, from the Lower Triassic Beisi Formation of western Guangxi Province, China, show a characteristic pattern of lamellar edges in the
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Late Ordovician (Hirnantian) scolecodont clusters from the Soom Shale Lagerstätte, South Africa
The specimens represent the first described scolecodonts from South Africa and the first apparatus-based taxonomic study of specimens from Gondwana.


Conodonts with preserved soft tissue from a new Ordovician Konservat-Lagerstätte
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The recent discovery of fossils with preserved soft tissues in the Cedarberg Mountains of the Cape Province has opened a new window on Ordovician life.