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Pentapsis valdiviae
Pentapsis valdiviae Lammons Micropaleontology, 16(2): 176. 6 May 1970
- Name
- Pentapsis valdiviae
- Rank
- Species
- Generic Name
- [Genus] Pentapsis
- Authors (Pub.)
- Lammons J. M.
- Publication
- Pentapsis, a new palynomorph genus from the Cretaceous (Aptian) of Peru [1970/5]
- Journal
- Micropaleontology
- Volume
- 16
- Issue
- 2
- Page number
- 176
- Year
- 1970
- Fossil Status
- reproductive organs (pollen)
- Stratigraphy
- Aptian
- Strat. comment
- Esperanza Formation
- Location
- approximately 3 kilometers NE of the village of Tarapoto , Department of San Martin, 640 kilometers NNE of Lima, Peru
Data for Holotypus
- Repository
- National Museum of Natural History, Smithsonian Institution, Washington, USA
- Repository Number
- Slide 2205-66-582-3; coordinates R 23.3+9.6; U.S.N.M. 43152
Data for Paratypus
- Repository
- National Museum of Natural History, Smithsonian Institution, Washington, USA
- Repository Number
- Slide 2205-66-582-2; coordinates R 36.6+16.8; text-figure 3, figure 2; U.S.N.M. 43153.
Slide 2205-66-582-1; coordinates R 35.5+1 3.9; textfigure 3, figure 3; U.S.N.M. 43154.
Slide 2205-66-582-8; coordinates R 12.2+1 3.7; textfigure 3, figure 4; U.S.N.M. 43155.
Slide 2205-66-582-7; coordinates R 22.2+9.1; textfigure 3, figure 5; U.S.N.M.43156.
Slide 2205-66-582-6; coordinates R 34.4+16.7; textfigure 3, figure 6; U.S.N.M.43157.
Slide 2205-66-582-6; coordinates R 28.3+10.7; textfigure 3, figure 7; U.S.N.M.431 57.
Slide 2205-66-582-6; coordinates R 21.4+14.0; textfigure 3, figure 8; U.S.N.M.43157.
Slide 2205-66-582-6; coordinatesR 29.7+10.0; textfigure 3, figure 9; U.S.N.M.43157.
Slide 2205-66-582-4; coordinatesR 17.2+15.5; textfigure 3, figure 10; U.S.N.M. 43158
- Diagnosis
- Palynomorph free, pentamerous in equatorial outline, bilaterally symmetrical with respect to an imaginary equatorial plane, radially symmetrical about
its polar axis. Compression parallel to the polar axis is common and results in a stellate outline like that of the holotype. Wall of polar plates single-layered, from 1.7 to 2.0 u in thickness. Walls of buttresses smooth, single-layered, from 2.0 to 2.5 u, in thickness. Central portion of each polar plate finely punctate. In some specimens the punctae produce a fine reticulate pattern. Margins of polar plates with border of linearly spaced pits less than 1 u in diameter; border of pits extending outward (distally) along the margin of each buttress. An expanded area of random pitting is present in the distal portion of each buttress. Presence of spore, pollen or inner body not observed.
