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Xiphosura (/ z ɪ f oʊ ˈ sj ʊər ə /; [2] from Ancient Greek ξίφος (xíphos) 'sword' and οὐρά (ourá) 'tail', in reference to its sword-like telson) is an order of arthropods related to arachnids.
Millipedes (originating from the Latin mille, "thousand", and pes, "foot") [1] [2] are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derived from this feature.
In some species all the legs are functionless, apart from the front pair in males. The abdomen is long and roughly cylindrical, with ten segments and two or three long cerci (tail-like appendages) at the tip. Like Entognatha, Archaeognatha and Zygentoma, the spiracles on the abdomen do not have closing muscles.
Taxon Type Named for Notes Ref Gigantactis gargantua Bertelsen, Pietsch & Lavenberg, 1981: Anglerfish: Gargantua [18]†Gargantuavis Buffetaut & Le Loeuff, 1998 Bird: Gargantua A genus of fossil flightless birds from the Cretaceous of Europe, and the largest known birds of the Mesozoic era; "generic name from Gargantua, the giant of French folklore made famous by François Rabelais, and avis ...
Brachiopod fossils show great diversity in the morphology of the shells and lophophore, while the modern genera show less diversity but provide soft-bodied characteristics. Both fossils and extant species have limitations that make it difficult to produce a comprehensive classification of brachiopods based on morphology.
Shesha is the nagaraja or king of all nāgas. The snake on whom Vishnu is in yoga nidra (Ananta shayana). [8] Takshaka is mentioned as a King of the Nagas. Ulupi, a companion of Arjuna in the epic Mahabharata; Vasuki is a nagaraja, one of the King serpents, who coils over Shiva's neck. [9]
Feathers are among the characteristics that distinguish the extant birds from other living groups. [188] Although feathers cover most parts of the body of birds, they arise only from certain well-defined tracts on the skin. They aid in flight, thermal insulation and waterproofing, with their colouration helping in communication and protection ...
The longest cockroach species is Megaloblatta longipennis, which can reach 97 mm (3 + 7 ⁄ 8 in) in length and 45 mm (1 + 3 ⁄ 4 in) across. [23] A Central and South American species, Megaloblatta blaberoides , has the largest wingspan of up to 185 mm ( 7 + 1 ⁄ 4 in). [ 24 ]