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Pycnodontiformes Genera
Pycnodontiformes is an extinct order of primarily marine bony fish. The group first appeared during the Late Triassic and disappeared during the Eocene. The group has been found in rock formations in Africa, Asia, Europe, North and South America. They were small to middle-sized fish, generally with laterally-compressed deep bodies, some with almost circular outlines, adapted for manuverability in reef-like environments. The group was morphologically diverse containing forms such the very short but deep Gebrayelichthyidae and the horned ''Ichthyoceros,'' both from the early Late Cretaceous of Lebanon. Most, but not all members of the groups had jaws with round and flattened teeth, well adapted to crush food items (durophagy), such as echinoderms, crustaceans and molluscs. Some pyncodontiformes developed piranha like teeth used for eating flesh. Most species inhabited shallow marine reef environments, while a handful of species lived in freshwater or brackish conditions. While rare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyrodus
''Gyrodus'' (from el, γύρος , 'curved' and el, ὀδούς 'tooth') is an extinct genus of pycnodontiform ray-finned fish that lived from the late Triassic (Rhaetian) to the middle Cretaceous (Cenomanian). Distribution Fossils of ''Gyrodus'' have been found in:''Gyrodus'' at .org ;Triassic * , France ;Jurassic * Quehita and Quebrada For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grypodon
''Grypodon'' is an extinct genus of prehistoric ray-finned fish that lived during the Late Cretaceous epoch. See also * Prehistoric fish * List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ... References Late Cretaceous fish Pycnodontiformes genera {{cretaceous-fish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paramicrodon
''Paramicrodon'' is a genus of hoverflies, with eight known species. They differ from ''Microdon'' by their short antennae and the lack of appendices on vein R4+5. Biology Larvae are found in ant Ants are eusocial insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from vespoid wasp ancestors in the Cretaceous period. More than 13,800 of an estimated total of 22 ... nests. Distribution They are native to Oriental, Australian, and Neotropical regions. Species *'' P. cinctellus'' ( Sack, 1926) *'' P. delicatulus'' Hull, 1937 *'' P. flukei'' Curran, 1936 *'' P. lorentzi'' Meijere, 1913 *'' P. miranda'' (Herve-Bazin, 1926) *'' P. nigripennis'' ( Sack, 1922) *'' P. novus'' Hull, 1937 *'' P. toxopei'' Meijere, 1929 References {{taxonbar, from1=Q2746444 Hoverfly genera Microdontinae Diptera of Australasia Diptera of Asia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |