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Macdonaldodendron giganticum
Macdonaldodendron giganticum Falcon-Lang, Kurzawe, S.G. Lucas Rev. Palaeobot. Palynol., 2014, 200: 143. 20 Sep 2013
- Name
- Macdonaldodendron giganticum
- Rank
- Species
- Original spelling
- giganticus
- Generic Name
- [Genus] Macdonaldodendron
- Authors (Pub.)
- Falcon-Lang H. J.
Kurzawe F.
Lucas S. G.
- Publication
- Coniferopsid tree trunks preserved in sabkha facies in the Permian (Sakmarian) Community Pit Formation in south-central New Mexico, U.S.A.: Systematics and palaeoecology [2013/9]
- Journal
- Review of Palaeobotany and Palynology
- Annee/Jahrgang
- 2014
- Volume
- 200
- Page number
- 143
- Year
- 2013
- Fossil Status
- stems
- Stratigraphy
- Sakmarian
- Strat. comment
- Community Pit Formation
- Location
- NMMNHS locality numbers L 3016, Prehistoric Trackways National Monument near Las Cruces, Doña Ana County, New Mexico, U.S.A.
- Paleoregion
- Laurussia (Laurentia)
Data for Holotypus
- Repository
- New Mexico Museum of Natural History and Science, Albuquerque, USA
- Repository Number
- NMMNHS 539411 (hand specimen) and NMMNHS
539411a–f (6 thin sections from a lower level in the trunk) and
NMMNHS 539411 g–l (6 thin sections from a position c. 100 mm
higher in the same trunk)
Data for Paratypus
- Repository
- New Mexico Museum of Natural History and Science, Albuquerque, USA
- Repository Number
- NMMNHS 539420 (hand specimen) and NMMNHS
539420a–e (5 thin sections)
- Diagnosis
- Substantial tree trunks N0.1 m diameter; pith,
c. 10–25 mm diameter, heterocellular with plate-like sclerotic
nests; robust cauline bundles, c. 500–700 μm diameter, endarch,
and non-sympodial; leaf traces, helically-arranged, terminating in
triangular leaves, c. 1.0–2.5 mm wide; branch traces, c. 1.75–
2.5 mm diameter, arranged in whorls of seven branches or more;
secondary xylem shows dominantly uniseriate tracheid pits, typically
only 1, or up to 2–4 cupressoid pits per cross-field, and rays
up to 26 cells high.
