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Ceratodus tunuensis
Taxonomy
Ceratodus tunuensis was named by Agnolin et al. (2018) [Robust dipnoan diagnosable on the basis of the following combination of characters (autapomorphies marked by an asterisk*): (1) five ridges on upper tooth plates and four ridges on lower tooth plates; (2) relatively short crests that are separated by wide and shallow inter-ridge furrows; (3) upper tooth plates with well-developed mesiointernal angle; (4) lower tooth plates with lingual margin uniformly convex*; (5) upper tooth plates with straight to slightly concave lingual margin; (6) first ridge of upper tooth plates subequal in size to other ridges; and (7) occlusal surface of the tooth plates with wide and deep occlusal pits that are randomly distributed along most of the tooth plate.]. Its type specimen is NHMD 11590, a tooth (a right upper tooth plate lacking the labial half of the first ridge), and it is a 3D body fossil. Its type locality is Ceratodus tunuensis-type locality, which is in a Norian terrestrial mudstone in the Fleming Fjord Formation of Greenland.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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2018 | Ceratodus tunuensis Agnolin et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Ceratodus tunuensis Agnolin et al. 2018
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: c = class, subp = subphylum | |||||
References: Hendy et al. 2009, Carroll 1988 |