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Blountina eleanora
Taxonomy
Blountina eleanora was named by Lochman and Duncan (1944) [Blountina eleanora Lochman in Lochman & Duncan 1944]. Its type specimen is USNM 127156, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is Horizon 9.2. Half Moon Pass, Big Snowy Mountains, which is in a Marjumian marine horizon in the Pilgrim Formation of Montana.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1944 | Blountina eleanora Lochman and Duncan p. 56 figs. pl. 8, figs 35-40 |
| 2020 | Blountina eleanora Armstrong et al. p. 24 figs. Plates 26, 27 |
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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.
†Blountina eleanora Lochman and Duncan 1944
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Armstrong et al. 2020 | Frontal area 24% (23–24) of cranidial length (sag.) with steeply sloping preglabellar field. Cranidium is slightly wider than long with evenly rounded anterior margin. Strongly convex glabella with nearly parallel sides, well-rounded front, and shallow occipital furrow expressed on the exoskeleton. Posterolateral projections long, extend to a narrow, tapered point. Semielliptical pygidium has distinct axial furrows that shallow at the terminal piece; pleural and interpleural furrows expressed only on internal mould. Border furrow nearly effaced on external surface, but inner edge of border marked on mould by termination of pleural and interpleural furrows (Pl. 27, fig. 4); border flexed steeply downward. Internal mould with pitted surface. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997 | |||||