Pollen From The Exoskeletons Of Stable Flies, \u3ci\u3eStomoxys Calcitrans\u3c/i\u3e (Linnaeus 1758), In Gainesville, Florida, U.S.A.

Stable flies are an important pest of humans and livestock. Despite being blood feeders, they also visit flowers to eat nectar. Stable flies with pollen adhering to their exoskeletons were collected at the University of Florida Horse Teaching Unit and taken to the Paleobotany and Palynology Laboratory at the Florida Museum of Natural History for processing and identification. The pollen on all the specimens was identified as Carolina willow, Salix caroliniana Michaux 1803. This small shrub or tree is found throughout Florida in wetland areas. This study demonstrates the utility of pollen analysis in interdisciplinary studies

The Fossil Pollen Record of the Pandanaceae

Volume: 36Start Page: 163End Page: 17

Studies in Neotropical Paleobotany. I. The Oligocene Communities of Puerto Rico

Volume: 56Start Page: 308End Page: 35

The Antarctic/Australian rift valley: Late cretaceous cradle of nortteastern Australasian relicts?

The montane vegetation of northeastern Australasia represents a modified sample of the late Cretaceous flora that fringed the embryonic Southern Ocean in the southern Australasian/Antarctic region. Beauprea, Knightia, Macadamia, Gevuina and/or Hicksbeachia (Proteasceae), Gunnera (Gunneraceae), Ilex (Aquifoliaceae), Winteraeae, Epacridaceae, Trimeniaceae, Nothofagus (brasii group), Araucariaceae, Podocorpus, Dacrydium and Dacrycarpus (Podocarpaceae) are confirmed in the Campanian-Maastrichtian pollen record of estuarine sediments in the Otway Basin, southeastern Australia. The primative angiosperms migrated there by individualistic routes after Early Cretaceous appearances in northern Gondwana and southern Laurasia; other taxa evolved in austral regions. Evidence is advanced for origin of Ilex, Beauprea, Knightia and Gevuina/Hicksbeachia in southern Australia/Antarctica during early phases (Late Cretaceous) of opening of the Southern Ocean

Structure and form ofaustral Cretaceous Normapolles-like pollen

Detailed analysis of breviaxial, tricolporate pollen from the Australian Upper Cretaceous reveals that Forcipites Dettmann & Jarzen, 1988, Gambierina Harris ex Stover & Partridge, 1973, emend., and Battenipollis gen. nov. are distinct in wall structure and aperture architecture from the Normapolles and Probrevaxones of the Northern Hemisphere. The parental source of the southern Normapolles-like pollen ranged across the Austro-Antarctic landmass during latest Cretaceous time, but probably evolved later than and independently of the northern taxa. Battenipollis is proposed for transcolpate, breviaxial pollen, and Gambierina is herein emended

Environmental significance of abundant and diverse hornwort spores in a potential submerged Paleoindian site in the Gulf of Mexico

A palynological analysis of sediments sampled from core HI-178, offshore High Island, Texas, provided a diverse and well-preserved palynoflora. The main objective was to analyze the environmental conditions at time of deposition. A secondary objective was to evaluate whether or not this site might have been occupied by Native Americans by looking for signs of human-driven changes in vegetation. Here we focus on the abundance of hornwort spores recovered from these samples, review their diversity, compare the fossil spores to modern analogues and discuss the paleoenvironmental implications of hornwort abundance. Although no direct evidence of human occupation was found, the pollen and spore assemblage recovered, marked by high abundance and diversity in spores of hornworts belonging to the families Anthocerotaceae and Notothyladaceae, indicate that this site was most likely not submerged at the time of deposition; human occupation was therefore possible. This site represents a coastal low-lying area with ponds or slow-moving waters that provided the humid environment needed for hornworts to reproduce and thrive under warm climatic conditions. © 2012 AASP - The Palynological Society

Late Cretaceous (Turonian) angiosperm pollen from Tanzania: a glimpse of past vegetation from a warmer climate

© 2018, © 2018 AASP–The Palynological Society. Exceptionally well-preserved palynomorphs were recovered from a Turonian section cored in Tanzania. Here we provide an in-depth evaluation of the terrestrial palynomorph assemblages recovered, discuss their environmental affinity, and provide taxonomic descriptions for seventeen angiosperm species. Forms present include various species of Liliacidites, Tricolpites, Tricolporites, Tetracolpites, Syncolporites, Triporopollenites, Hexaporotricolpites, and Periporopollenites. In addition to these angiosperm species, the palynological assemblage is dominated by gymnosperm genera that include Classopollis, Ephedripites, and Exesipollenites. This assemblage and the rarity of humidity-dependent bryophytes and pteridophytes clearly support the hypothesis that the Turonian climate in Tanzania was warm and relatively dry

Palynomorph evidence for tropical climate stability in the Gulf of Papua, Papua New Guinea, over the latest marine transgression and highstand (14,500 years BP to today)

© 2017 Elsevier Ltd and INQUA Three sediment cores (MV-41, MV-46, and MD-50) from the Gulf of Papua (GoP), Papua New Guinea, were analyzed to assess changes in climatic, oceanographic, and sedimentological conditions over the last 14.5 kyr. Palynomorphs, which were isolated from sediment core samples, were collected at approximately 0.5-m intervals using a strong acid and oxidant (MD-50)/non-oxidant (MV-41, MV-46) procedure. Radiocarbon (14C) stable isotope geochronology, magnetic susceptibility, stable isotope analysis (MD-50 only; Oxygen-18 [18O] and Carbon-13 [13C]), and clay mineral maturity analysis were also completed for each core. Palynological data indicate that climatic conditions at sea level have remained warm, wet, and stable for the past 14.5 kyr with sea surface temperatures in the GoP above 14 °C. Potential decreases in vegetative cover marked the Younger Dryas interval (12.5–11.5 kyr BP), as indicated by reduced pollen and spore recovery. The end of the latest marine transgression (and the subsequent return to eustatic sea level highstand) is clearly delineated by increases in marine palynomorph recovery and decreases in mangrove pollen at approximately 5 kyr BP. An increase in seasonality and potential El Niño Southern Oscillation variability is observed in MD-50\u27s oxygen isotope results at ∼5 kyr BP. This is not supported by the palynomorph record, likely because of the sampling interval and dilution by tropical pollen flora, which indicates stable climatic conditions throughout the last 14.5 kyr. Sediment transport pathways in the GoP remained fairly constant throughout the time interval, which is supported by the lack of major changes in palynomorph assemblage composition