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[19] [20] Some very small insects use the fling-and-clap or Weis-Fogh mechanism in which the wings clap together above the insect's body and then fling apart. As they fling open, the air gets sucked in and creates a vortex over each wing. This bound vortex then moves across the wing and, in the clap, acts as the starting vortex for the other wing.
Pterosaurs are also colloquially referred to as pterodactyls, particularly in fiction and journalism. [16] However, technically, pterodactyl may refer to members of the genus Pterodactylus , and more broadly to members of the suborder Pterodactyloidea of the pterosaurs.
Pterodactyloidea (/ˌtɛrəˈdækt͡ɬɔɪdɪːə/; derived from the Greek words πτερόν (pterón, for usual ptéryx) "wing", and δάκτυλος (dáktylos) "finger") [1] is one of the two traditional suborders of pterosaurs ("wing lizards"), and contains the most derived members of this group of flying reptiles.
Pterodactylus (from Ancient Greek: πτεροδάκτυλος, romanized: pterodáktylos ' winged finger ' [2]) is a genus of extinct pterosaurs.It is thought to contain only a single species, Pterodactylus antiquus, which was the first pterosaur to be named and identified as a flying reptile and one of the first prehistoric reptiles to ever be discovered.
After two years of poor sales of snowmobiles, due to a dearth of snow and no lawsuits against Pterodactyl Limited regarding the engine, Cuyuna agreed to build the engines themselves. [2] The 430 was also produced in a reduced 2.362 in (60.0 mm) bore version called the 340.
All the Pterodactyl designs have a distinct fuselage, with the possible exception of the VIII. I have been able to verify very little about this proposed craft, even whether it was a Westland or a Shot Bros. project, never mind whether they had decided to give it a fuselage or not. So, unless you know of a reliable source for it as a flying ...
The generic name, Propterodactylus, combines the Ancient Greek suffix "προ-" ("pro-"), meaning "before", with the genus name Pterodactylus (derived from Greek words meaning "wing digit"). As such, the name references its position as a "forerunner" to the Pterodactyloidea, as well as its long-standing nickname as the "Painten pro ...
Rhamphorhynchus (/ ˌ r æ m f ə ˈ r ɪ ŋ k ə s /, [1] from Ancient Greek rhamphos meaning "beak" and rhynchus meaning "snout") is a genus of long-tailed pterosaurs in the Jurassic period. . Less specialized than contemporary, short-tailed pterodactyloid pterosaurs such as Pterodactylus, it had a long tail, stiffened with ligaments, which ended in a characteristic soft-tissue tail va