...DAVID T. POCKNALL; DAVID M. JARZEN Abstract Fossil pollen exhibiting viscin threads are reported from Upper Cretaceous and Paleocene deposits in western Venezuela. The sediments were deposited in a marginal marine environment in an area presently occupied by the northern flank of the Venezuelan...

... of neritic subpolar to polar conditions when these underlying deposits were forming. Palaeostomocystis could therefore be a valuable indicator of early icesheet development on the Antarctic margins during the mid-Cenozoic. David Pocknall and David Jarzen report on pollen with viscin threads from...

... sp. (plate 10: 305 ) 1d. Sexine gemmate Macrocarpaea tepuiensis (plate 10: 308 ) 2a. Grains with three or more colpi, colpi short; exine thick (5 μm or more) Utricularia quelchii (plate 10: 303–304 ) 2b. Grains tricolporate; exine 2 μm or less 3 3a. Viscin threads present...

... & Milodowski, 2013 ) has confirmed that the palygorskite is restricted to the close viscinity of the UPL. Whilst this does not conclusively prove that the observed alteration of smectite to palygorskite is the result of interaction with alkaline groundwater, it would be consistent with reaction with low...

...: 3.6 (2.9–4.7) μm; round aspidate pore; pore diameter: 2.8 (2.1–3.6) μm; vestibule height: 6.3 (4.5–8.8) μm; vestibule width: 7.1 (5.4–8.8) μm; viscin threads present, approximately 110–130 μm long; rugulate; exine thickness: 2.8 (2.5–3.8) μm. Spherical to oval grain; maximum dimension: 31.8 (29.0...

... µm). Exine separates toward the apertures vestibula, about 1 µm high. A string-like structure can also be noticed emerging from the apertures (viscin thread). Remarks. Dispersal unit. Large tetrad and pollen grain. Projected annulate ectopores. Vestibulate. Individual grains are psilate...

... ) was a junior synonym of Ericipites . Farabee and Canright (1986) transferred Stanley's species to Ericipites for that reason. Affinity. Ericaceae. Affinities with ‘ Kalmia ?’ were suggested by Stanley (1965) , however the Almont fossils differ in sculpturing pattern and lack viscin threads...

.... 1977 . A modern analog of Schizosporis reticulatus . Palynology , 1 : 139 – 142 . Pocknall D.T. , Jarzen D.M. 2009 . Pollen with viscin threads from the Late Cretaceous and Paleocene, Mérida Andes, western Venezuela . Palynology , 33 : 55 – 61 . Postley O.C...

... of Eocene to Pliocene strata in the Imperial Nuktak C-22 well, Mackenzie Delta region, District of Mackenzie, N.W.T . Geological Survey of Canada, Bulletin , 340 : 1 – 89 . Pocknall D.T. , Jarzen D.M. 2009 . Pollen with viscin threads from the Late Cretaceous and Paleocene, Mérida...

... in the Cenozoic (Palynodata Inc. and White 2008 ). Onagraceae, possibly Epilobium or Ludwigia (Frederiksen 1983 ; Ramírez-Arriaga, Prámparo, et al. 2014 ). Corsinipollenites parviangulus Frederiksen 1983 sensu lato Plate 11 , figure 13 The presence of viscin threads in some...