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Callixylon seamrogia
Callixylon seamrogia Durieux, Decombeix, C.J. Harper, Ramel, Prestianni in Durieux, Decombeix, C.J. Harper, Ramel, C. Mays, Prestianni Rev. Palaeobot. Palynol., 2025, 334(105256): 2. 29 Nov 2024
- Name
- Callixylon seamrogia
- Rank
- Species
- Generic Name
- [Genus] Callixylon
- Authors (Name)
- Durieux T.
Decombeix A.-L.
Harper C. J.
Ramel M.
Prestianni C.
- Authors (Pub.)
- Durieux T.
Decombeix A.-L.
Harper C. J.
Ramel M.
Mays C.
Prestianni C.
- Publication
- Callixylon seamrogia sp. nov., a new species from the uppermost Famennian (Upper Devonian) of Ireland [2024/11]
- Journal
- Review of Palaeobotany and Palynology
- Annee/Jahrgang
- 2025
- Volume
- 334
- Issue
- 105256
- Page number
- 2
- Year
- 2024
- Fossil Status
- stems
- Stratigraphy
- Famennian
- Strat. comment
- Harrylock Formation
- Location
- Sandeel Beach, County Wexford, Ireland (52◦ 09′ 40.7"N, 06◦ 52’ 57.4"W)
- Paleoregion
- Laurussia (Avalonia)
Data for Holotypus
- Repository
- Trinity College, Geological Museum, Dublin, Ireland
- Repository Number
- HH40
- Diagnosis
- Eustelic stems and associated 3-lobed actinostelic roots, both with secondary xylem. Eustelic axes with mesarch vascular bundles in contact with the secondary xylem and a heterocellular pith with thin and thick-walled cells. Actinostelic axes with 3-lobed primary xylem more than 2 mm wide
with numerous exarch protoxylem strands located at the tips and along
the lobes. Secondary xylem in both types of axes with uniseriate rays up to 30 cells in height. Two types of cells in rays, parenchyma and ray tracheids.
Ray tracheids numerous, unevenly arranged inside rays, and shorter
than parenchyma cells in tangential section.
