Incertae
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publication ID |
https://doi.org/10.5252/g2017n4a5th |
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publication LSID |
urn:lsid:zoobank.org:pub:2832B914-8464-460F-B3F4-5BB9EA01D513 |
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persistent identifier |
https://treatment.plazi.org/id/03C187A2-FFFD-475B-790F-F8C0FA40F864 |
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treatment provided by |
Marcus (2021-08-30 02:32:48, last updated by Plazi 2023-11-05 20:36:47) |
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scientific name |
Incertae |
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Genus Incertae sedis
Plant indet. 1 ( Fig. 3D, E View FIG )
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.
GOMEZ B., DAVIERO- GOMEZ V., PERRICHOT V., THEVENARD F., COIFFARD C., PHILIPPE M. & NERAUDEAU D. 2004. - Assemblages floristiques de l'Albien-Cenomanien de Charente-Maritime (SO France). Annales de paleontologie 90: 147 - 159. https: // doi. org / 10.1016 / j. annpal. 2004.03.003
PONS D., BOUREAU E. & BROUTIN J. 1976. - Nouvelles etudes paleobotaniques des environs d'Angers I. Eretmophyllum andegavense nov. sp., Ginkgoale fossile du Cenomanien, in Comptes Rendus du 97 e Congres national des Societes savantes. Section Sciences, Nantes: 367 - 369.
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.
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