| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Marsileaceaephyllum
Emended generic diagnosis. Rhizomes bearing compound
leaves and roots, or detached compound leaves.
Leaves with four leaflets. Leaflets sessile, obovate to obdeltoid,
base shape cuneate to convex, apex obtuse and
rounded. Margin entire or apical portion crenate. Leaflet
venation dichotomizing with few anastomoses to reticulate.
Marginal vein present.
References consulted for diagnosis. Rich et al. (2001),
Skog and Dilcher (1992), Nagalingum (2007), Herman and
Kvacek (2010).
It was assigned to Marsileaceae by Nagalingum (2007), Hermsen et al. (2013) and Vallati et al. (2017).
| Year | Name and author |
|---|---|
| 2007 | Marsileaceaephyllum Nagalingum |
| 2013 | Marsileaceaephyllum Hermsen et al. |
| 2017 | Marsileaceaephyllum Vallati et al. p. 52 |
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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.
| Reference | Diagnosis | |
|---|---|---|
| E. J. Hermsen et al. 2013 | Emended generic diagnosis. Rhizomes bearing compound leaves and roots, or detached compound leaves. Leaves with four leaflets. Leaflets sessile, obovate to obdeltoid, base shape cuneate to convex, apex obtuse and rounded. Margin entire or apical portion crenate. Leaflet venation dichotomizing with few anastomoses to reticulate. Marginal vein present. |
Age range: Maastrichtian or 72.10000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maastrichtian | Argentina (Chubut) | M. sp. (233995) |