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Stramentum canadensis
Taxonomy
Loricula canadensis was named by Whiteaves (1889). It is a 3D body fossil.
It was recombined as Stramentum canadensis by Hattin (1977) and Gale (2016).
It was recombined as Stramentum canadensis by Hattin (1977) and Gale (2016).
Synonymy list
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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.
†Stramentum canadensis Whiteaves 1889
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. E. Hattin 1977 | Capitulum 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. |