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Hapsidophyllas
Taxonomy
Hapsidophyllas was named by Bamforth and Narbonne (2009).
It was assigned to Rangeomorpha by Bamforth and Narbonne (2009), Erwin et al. (2011) and Brasier et al. (2012).
It was assigned to Rangeomorpha by Bamforth and Narbonne (2009), Erwin et al. (2011) and Brasier et al. (2012).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2009 | Hapsidophyllas Bamforth and Narbonne pp. 902 – 903 |
| 2011 | Haspidophyllas Erwin et al. pp. SOM 13 |
| 2012 | Hapsidophyllas Brasier et al. p. 1119 |
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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.
G. †Hapsidophyllas Bamforth and Narbonne 2009
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†Hapsidophyllas flexibilis Bamforth and Narbonne 2009
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. L. Bamforth and G. M. Narbonne 2009 | Decimeter-scale, multibranched fossil consisting of numerous ovate to lanceolate leaflets arranged in a radial configuration about an elongate basal basal rod. Leaflets with prominent, flexible central stalks bearing multiple primary branches emerging sub-perpendicularly along the length of the central stalk, alternately branching on either side. Secondary branches emerging perpendicularly to and along the length of each primary branch. | |
| M. D. Brasier et al. 2012 | Frond bipolar, comprising two rows of primary branches emanating alternately from a central axis, which may be displayed (Figs 7A–B and 8G). Inflation of first-order branches is proximal, and inflation of second-order branches is also proximal. First-order branches show sub- parallel alignments of units with displayed structure, with both furled and freely overlapping margins. Second-order branches are often poorly preserved, but are seemingly rotated and furled, and possess subparallel alignments. A basal disc is not seen. |