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Paracornus poulseni
Taxonomy
Paracornus poulseni was named by Malinky and Skovsted (2004). Its type specimen is MGUH 27089, a shell, and it is not a trace fossil. It is the type species of Paracornus.
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Paracornus poulseni Malinky and Skovsted pp. 557-558 figs. 3E-F |
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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.
†Paracornus poulseni Malinky and Skovsted 2004
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. M. Malinky and C.B. Skovsted 2004 | Seemingly orthoconic conch with apical curvature slightly to right when viewed from dorsum; sides of conch nearly parallel to each other in apical region with sides diverging due to increase in apical angle at approximately half the distance between apex and aperture; dorsum high with blunt median ridge; flanks adjacent to it seem to be straight, and lateral edges tightly rounded; aperture seems to be orthogonal but with broad shallow median indentation along dorsal rim, and lateral sinuses poorly developed to non−existent. Ligula apparently long with flattened anterior edge and gently dipping sides. Cross−section has rounded triangular shape.
Shell on dorsum covered with series of knob−like projections that are aligned to create what appear to be ribs; ribs follow pattern of growth lines; width of knobs equal to width of space between each row of knobs. Venter has widely and evenly spaced ribs which are most pronounced near lateral edges beginning where apical angle changes to become fainter both near the middle of venter and toward apex. Protoconch appears to be elongate and tubular. |
Measurements
No measurements are available
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| Source: o = order, p = phylum | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Collections
No collection or age range data are available