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Stramentum elegans

Maxillopoda - Lepadiformes - Stramentidae

Taxonomy
Stramentum elegans was named by Hattin (1977). Its type specimen is KU 111520, an other, and it is a 3D body fossil.

Synonymy list
YearName and author
1977Stramentum elegans Hattin p. 807 figs. pl. 1, figs. 4-6; pl. 2, figs. 1-12; pl. 3, figs. 1-12

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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
specieselegans

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 markedly
trapezoidal, with generally well-developed
rostral slip and with upper lateral margin and
rostral part of occludent margin forming
nearly right angles with base in adults. Scutal
umbo lies at pronounced angulation of occludent
margin, and lies approximately one-half
distance from scutal apex to rostral angle. Occludent
margin of capitulum strongly inflected
in adults, less inflected to straight in juveniles;
occludent margins of scutum and tergum meet
to form angle ranging from 120? to 180?, averaging
approximately 150? for specimens
measured. Height of peduncle ranges from 1.8
to 2.8 times height of capitulum at carinal
margin, averaging 2.4 (Table 2). Peduncle
widest at its summit, with gently convex rostral
and carinal margins. Plates in paired columns
of peduncle approximately twice as wide
as high, commonly less.