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Illaenoides elongata
Taxonomy
Illaenoides elongata was named by Thomas (1929). Its type specimen is YPM 26122, a cephalon/head, and it is a 3D body fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1929 | Illaenoides elongata Thomas p. 6 figs. pl. 1, figs 8,9 |
| 2021 | Illaenoides elongata Holloway pp. 6 - 9 figs. Plate 1; Plate 2, Figs 1–23, 29 |
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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.
†Illaenoides elongata Thomas 1929
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. J. Holloway 2021 | Cranidium curving through about 110°–120° in lateral profile, vertical or only slightly overhanging anteriorly in dorsal view; axial furrow converging strongly forwards immediately in front of posterior cephalic margin, thereafter subparallel as far as lunette, very short and weak in front of lunette; glabella with slight independent convexity (tr.) posterior to lunette, lacking independent convexity farther forward; anterior branch of facial suture converging weakly forwards. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004, Hendy et al. 2009 | |||||