Incertae

Moreau, Jean-David, Néraudeau, Didier, Philippe, Marc & Dépré, Éric, 2017, Albian flora from Archingeay-Les Nouillers (Charente- Maritime): comparison and synthesis of Cretaceous meso- and macro-remains from the Aquitaine Basin (southwestern France), Geodiversitas 39 (4), pp. 729-740 : 733

Genus Incertae sedis

Plant indet. 1 ( Fig. 3D, E )

MATERIAL. — 1 specimen: IGR 2773.

DESCRIPTION

This single specimen consists of a fragment of leaf or pinnule showing numerous thin parallel veins. The fragment is 45 mm long and up to 15 mm wide.

REMARKS

Cuticle is not preserved, only the imprint. The base and apex of the leaf or the pinnule being absent, determination of the specimen is not possible. In mid-Cretaceous floras from western France,quite broad and elongated leaves or pinnules with parallel veins are known among conifers such as Dammarophyllum Velen., 1889,ginkgophytes such as Nehvizdya andegavense (D. Pons, Boureau & Broutin, 1976) Gomez, 2000 , and bennettitaleans such as Zamites Brongn., 1828 . The specimen differs from the Nehvizdya andegavense leaves previously found at Archingeay ( Gomez et al. 2004) by the absence of dichotomous veins and resin bodies between veins. Its shape seems to be similar to that of the conifer leaf Dammarophyllum which had not been reported previously from the uppermost Albian deposits of Archingeay-Les Nouillers.

Figures

FIG. 3. — A, Geinitzia Endl., 1847, leafy axis showing pointed and spirally arranged leaves;Géosciences Rennes, IGR 2769b; B, detail of A; C, Frenelopsis Schenk, 1869, leafy axis showing three small tips (arrows) on the apex, Géosciences Rennes, IGR 2769a; D, E, Glenrosa carentonensis Moreau, Néraudeau, Tafforeau & Dépré, 2015, leafy axes showing short and spirally arranged leaves, Géosciences Rennes, IGR 2769c. Scale bars: 1 cm.