Santaniella Gobo, Coiffard, Bachelier, L.Kunzmann et Iannuzzi in Gobo, Kunzmann, Iannuzzi, Bachelier & Coiffard

Plant Fossil Names Registry Number: PFN002910

Act LSID: urn:lsid:plantfossilnames.org:act:2910

Authors: W. V. Gobo, C. Coiffard, J. B. Bachelier, L. Kunzmann & R. Iannuzzi

Rank: genus

Reference: Gobo, W. V., Kunzmann, L., Iannuzzi, R., Bachelier, J. B. & Coiffard, C. (2022): First evidence of ranunculids in Early Cretaceous tropics. – Scientific Reports 12: 1–14 (5040).

Page of description: 2

Type

Original diagnosis/description

Angiosperm with herbaceous to suffruticose growth habit. Thin elongated axes with leaves ranging from sessile and simple distally to increasingly longer, larger, and more divided and lobed towards the base. Proximal leaves pedately compound with typical bifurcation into two (type II) or more leaflets (type III). Leaf and leaflets unlobed to lobed with entire margin. Petiole (and petiolules) with marginal attachment. Primary venation pinnate and secondary craspedodromous, branching dichotomously and merging into a perimarginal vein. Anastomoses rare. Fruit a solitary and terminal follicetum derived from an apocarpous, superior gynoecium with 2 to up to at least 11 multiovulate plicate carpels developing into stipitate, reflexed and pendulous follicles, born on a short, flattened to slightly concave receptacle typically surrounded by persistent perianth-like organs. Fruitlet comprises at least up to 9 seeds arranged in a row along a median longitudinal placenta on the abaxial side.

Etymology

The genus name is derived from the lithostratigraphic unit known as the Santana Group where the studied specimens come from.