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Stramentum canadensis

Maxillopoda - Lepadiformes - Stramentidae

Taxonomy
Loricula canadensis was named by Whiteaves (1889). It is a 3D body fossil.

It was recombined as Stramentum canadensis by Hattin (1977).

Synonymy list
YearName and author
1889Loricula canadensis Whiteaves p. 190
1977Stramentum canadensis Hattin p. 815

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumMandibulata
Pancrustacea
RankNameAuthor
subphylumCrustaceaBrĂ¼nnich 1772
classMaxillopodaDahl 1956
subclassCirripedia(Rafinesque 1816)
superorderThoracica(Darwin 1854)
orderLepadiformesBuckeridge and Newman 2006
suborderLepadomorphaGruvel 1905
familyStramentidaeWithers 1920
genusStramentumLogan 1897
speciescanadensis(Whiteaves 1889)

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.

Diagnosis
ReferenceDiagnosis
D. E. Hattin 1977Capitulum and peduncle typical
for family, comprising 10 plates and 8 columns,
respectively. Scutum trapezoidal, with
upper lateral margin forming obtuse angle
with base and lower part of occludent margin
forming acute angle with base. Scutal umbo
lies at position of angulation of occludent margin;
lies a little more than one-third distance
from scutal apex to rostral angle of scutum.
Occludent margin of capitulum strongly inflected
in largest known (type) specimen, less
inflected in smaller specimens. Upper latus
broadly triangular. Carinobasal angle of carinal latus strongly obtuse. Peduncle joins capitulum
with strong obliquity, has up to four
more plates in carinal lateral column than in
scutal column. Peduncle widest at summit,
margins convex, with plates in paired columns
usually more than three times wider than high.