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Papillaephyllum labutae
Papillaephyllum labutae Čepičk., J. Kvaček Rev. Palaeobot. Palynol., 319(104990): 2. 12 Sep 2023
- Name
- Papillaephyllum labutae
- Rank
- Species
- Generic Name
- [Genus] Papillaephyllum
- Authors (Pub.)
- Čepičková J.
Kvaček J.
- Publication
- Papillaephyllum, a new genus of angiosperm foliage from the Cenomanian of the Czech Republic [2023/9]
- Journal
- Review of Palaeobotany and Palynology
- Volume
- 319
- Issue
- 104990
- Page number
- 2
- Year
- 2023
- Fossil Status
- leaves
- Stratigraphy
- Cenomanian
- Strat. comment
- Peruc-Korycany Formation
- Location
- Pecínov quarry, Czech Republic
- Paleoregion
- Eurasia (Europe)
Data for Holotypus
- Repository
- Národní Muzeum, Prague, Czech Republic
- Repository Number
- NMP-F 2317, coll. number: 19/1994
Data for Paratypus
- Repository
- Národní Muzeum, Prague, Czech Republic
- Repository Number
- F 5280 [Plate III, 1–7]; F 5279 [Plate III, 3]
- Diagnosis
- Simple narrowly elliptic serrate leaf. Leaf base symmetrical, acute; apex bluntly acute with terminal papilla. Chloranthoid teeth with terminal papilla. Distal flank of tooth concave to straight or retroflexed, proximal flank of tooth convex to straight. Venation pinnate with robust midrib, semicraspedodromous to festoonedsemicraspedodromous with reticulate tertiaries, occasionally craspedodromous. Chloranthoid tooth with large terminal papilla. Leaf hypostomatic. Adaxial cuticle bearing isodiametric, polygonal ordinary cells. Anticlinal walls straight to slightly curved. External surface smooth. Abaxial cuticle bearing polygonal ordinary cells with well-pronounced papillae. Guard cells with thickened anticlinal walls. Stomata laterocyclocytic, stephanocytic-bicyclic, stomatal axes randomly oriented;
externally stomata protected by well-pronounced papillae forming
wreaths around them. Papillae simple, rarely fused.
