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Polliaxis hanseni
Taxonomy
Polliaxis hanseni was named by Hollingsworth (2005). Its type specimen is USNM 528361, an exoskeleton (Internal mold of cephalon and nearly complete thorax), and it is a mold. Its type locality is TH Pit, which is in a Dyeran open shallow subtidal siltstone/sandstone in the Poleta Formation of Nevada.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2005 | Polliaxis hanseni Hollingsworth pp. 138 - 139 figs. Figure 6.1, 6.3 |
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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.
†Polliaxis hanseni Hollingsworth 2005
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. S. Hollingsworth 2005 | species of Polliaxis with glabella strongly inflated transversely and longitudinally, widest at L3. Eye ridges distinct, nearly as high as palpebral lobe. Thorax long, slightly tapered, 22 segments, axial rings have medial spine. Pleural spines flattened, triangular, slightly curved posteriorly, and directed posterolaterally. Pygidium with wide strongly tapered axis and notably elevated rounded trian- gular terminal piece. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Hendy et al. 2009, Whittington et al. 1997 | |||||