Definition of Williamsonia. Meaning of Williamsonia. Synonyms of Williamsonia

- Williamsonia is a genus of plant belonging to Bennettitales, an extinct order of seed plants. Within the form classification system used in paleobotany...
- Williamsonia may refer to: Williamsonia, a genus of dragonflies also known as boghaunters Williamsonia (plant), an extinct genus of plants in the family...
- (uni****ual) cones on the same plant. The ovule-producing (female) cones (Williamsonia, etc.) are similar to mature bisporangiate cones, with interseminal scales...
- Williamsonia is a genus of small dragonflies in the family Corduliidae. They are commonly known as boghaunters. Unlike other genera of emerald dragonflies...
- Williamsonia fletcheri, the ebony boghaunter, is a species of dragonfly in the emerald family Corduliidae. It is found in southeastern Canada and the northeastern...
- Williamsonia lintneri, the ringed boghaunter, is a species of dragonfly in the emerald family (Corduliidae). It is found at acid bogs in the northeastern...
- Indica included his account of the Bennettitalean plant that he named Williamsonia sewardi, and another description of a new type of petrified wood, Homoxylon...
- pollen-producing organs. It is ****ociated with the female ovulate cone Williamsonia. Although the morphology of Weltrichia is highly variable, the overall...
- Compsognathus Allosaurus Archaeopteryx Stegosaurus Rhamphorhynchus Brontosaurus Williamsonia Cycadeoidea Araucarites Matonidium Neocalamites Schizoneura Cretaceous...
- Hayek (East Greenland saxifrage) and a suite of fossil plant species, Williamsonia nathorstii Carruthers (a fossil dragonfly) and Laestadites nathorstii...