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Cassitella baculata
Taxonomy
Cassitella baculata was named by Malinky and Skovsted (2004). Its type specimen is MGUH 27130, a shell, and it is not a trace fossil. Its type locality is GGU 314807 - Albert Heim Bjerge, which is in a Dyeran carbonate limestone in the Bastion Formation of Greenland. It is the type species of Cassitella.
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Cassitella baculata Malinky and Skovsted p. 574 fig. 15 |
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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.
†Cassitella baculata Malinky and Skovsted 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. M. Malinky and C.B. Skovsted 2004 | Generally cap−shaped shell of near circular to
subtriangular outline, with rounded knob−like apex displaced to about one third the distance toward the proximal side of the shell. Angle of dip between apex and both distal and proximal areas equal in some individuals, but other individuals with shell curving upward between apex and proximal edge result− ing in a saddle−shaped profile. Surface with fine, widely and generally equally spaced concentric ribs and narrow depres− sions between ribs. Two rod−like and widely diverging ridges on the internal surface emanating from proximal edge of shell. Ridges are attached to one side of shell but free on the opposite side where they terminate in a straight, rounded edge. Termi− nation of ridges rounded, usually divided into lobes. The shell is relatively thick (up to 0.35 mm) and the interior surface often has a finely pitted ornamentation. |