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Echimonocolpites chicxulubensis
Echimonocolpites chicxulubensis V. Sm., Warny, Jarzen, Demchuk, Vajda, Gulick Palynology, 44(3): 491. 23 Jan 2020
- Name
- Echimonocolpites chicxulubensis
- Rank
- Species
- Generic Name
- [Genus] Echimonocolpites
- Authors (Pub.)
- Smith V.
Warny S.
Jarzen D. M.
Demchuk T. D.
Vajda V.
Gulick S. P. S.
- Publication
- Paleocene–Eocene palynomorphs from the Chicxulub impact crater, Mexico. Part 2 [2020/1]
- Journal
- Palynology
- Volume
- 44
- Issue
- 3
- Page number
- 491
- Year
- 2020
- Fossil Status
- sporae dispersae (pollen)
- Stratigraphy
- Ypresian
- Location
- IODP 364 Site M0077, Chicxulub impact crater, Yucatán, Mexico
- Paleoregion
- America (North)
Data for Holotypus
- Repository
- Department of Geology and Geophysics, Louisiana State University, Baton Rouge, USA
- Repository Number
- slide 1, EFS M13/1
- Diagnosis
- Monocolpate, occasionally longicolpate to ambiguously zonacolpate, echinate to baculate, length 30 (35) 48 lm, width 16 (23) 33 lm. Exine ca. 0.5–1.0 lm thick, not visibly columellate. Shape elliptical to circular in equatorial view. The colpus may extend to the edge of the grain, but in some specimens the colpus appears to partially or entirely encircle the grain, and could be interpreted as longicolpate or even zonacolpate. Commonly, the pollen grain is folded, and the morphology of the colpus is difficult to determine with certainty. Exine covered in scattered spines, otherwise
psilate to scabrate, possibly indistinctly punctate. Spines broadly conical to slender, sometimes with expanded bases, occasionally baculate, 0.5–3 lm long. The spines are not deep-rooted, and do not indent the underlying exine as in Mauritiidites van Hoeken-Klinkenburg 1964.
