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Mackinnonia puppis

Helcionelloida - Helcionellida - Trenellidae

Taxonomy
Mackinnonia puppis was named by Høyberget et al. (2015). Its type specimen is PMO 227.699, a shell, and it is a 3D body fossil. Its type locality is Skyberg Farm (Lower bed), which is in a Toyonian carbonate limestone in the Ringstrand Formation of Norway.

Synonymy list
YearName and author
2015Mackinnonia puppis Høyberget et al. pp. 49 - 50 fig. 16A–J

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
RankNameAuthor
classHelcionelloidaPeel 1991
orderHelcionellida
superfamilyYochelcionelloidea
familyTrenellidae
genusMackinnonia
speciespuppis

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.

Mackinnonia puppis Høyberget et al. 2015
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Diagnosis
ReferenceDiagnosis
M. Høyberget et al. 2015A large species of Mackinnonia, with a laterally compressed, triangular shell where the apex is shifted slightly posteriorly. Internal moulds with 6 or more thick, rounded, comarginal ribs that are accentuated anteriorly and posteriorly by an upturned knob so as to give the impression of a boat shape in lateral view.