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Pararcus diepenbroeki
Taxonomy
Pararcus diepenbroeki was named by Klein and Scheyer (2014). Its type specimen is TWE 480000454, a set of postcrania, and it is a 3D body fossil. Its type locality is Winterswijk quarry, layer 36, which is in an Anisian shallow subtidal mudstone in the Vossenveld Formation of the Netherlands. It is the type species of Pararcus.
Synonymy list
| Year | Name and author |
|---|---|
| 2014 | Pararcus diepenbroeki Klein and Scheyer figs. 1-7 |
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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.
†Pararcus diepenbroeki Klein and Scheyer 2014
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. Klein and T. Scheyer 2014 | A large non-cyamodontoid placodont with ventrolateral expansion of neural arches of the posterior presacral and sacral vertebrae; these neural arches un-fused (paired) and without a neural spine; vertebral centra deeply amphicoelous and notochordal; centra swollen and pachyostotic but only weakly constricted, with the lateral edges of the centra extending mostly parallel to each other; plate-like pubis with a distinct obturator foramen; plate-like ischium with a distinct concave anterior margin; dorsally flattened limb bone with one end distinctly broader and much more massive than the other, the broader articulation facet being roughly oval, whereas the other articulation facet is much narrower but still thick with a round-triangular shape, one the straight (?preaxial) margin, and a slightly curved (?postaxial) margin at the broader end; absence of angled lateral gastral elements; ventral process of the haemapophyses neither pointed nor expanded; four different types of un-fused armour plates varying in size and shape. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Bush and Bambach 2015 | |||||