A phylogenetic study by Jost & Shaw in 2006 using sequences from 18S, 28S, and 16S rRNA supported the monophyly of Ensifera. Most ensiferan families were also found to be monophyletic, and the superfamily Gryllacridoidea was found to include Stenopelmatidae, Anostostomatidae, Gryllacrididae and Lezina. Schizodactylidae and Grylloidea were shown to be sister taxa, and Rhaphidophoridae and Tettigoniidae were found to be more closely related to Grylloidea than had previously been thought. The authors stated that "a high degree of conflict exists between the molecular and morphological data, possibly indicating that much homoplasy is present in Ensifera, particularly in acoustic structures." They considered that tegmen stridulation and tibial tympanae are ancestral to Ensifera and have been lost on multiple occasions, especially within the Gryllidae.[33]
There are ten ways in which a batsman can be dismissed: five relatively common and five extremely rare. The common forms of dismissal are bowled,[92] caught,[93] leg before wicket (lbw),[94] run out[95] and stumped.[96] Rare methods are hit wicket,[97] hit the ball twice,[98] obstructing the field,[99] handled the ball[100] and timed out.[101] The Laws state that the fielding team, usually the bowler in practice, must appeal for a dismissal before the umpire can give his decision. If the batsman is out, the umpire raises a forefinger and says "Out!"; otherwise, he will shake his head and say "Not out".[102] There is, effectively, an eleventh method of dismissal, retired out, which is not an on-field dismissal as such but rather a retrospective one for which no fielder is credited.[103]
Limited overs cricket is always scheduled for completion in a single day. There are two types: List A which normally allows fifty overs per team; and Twenty20 in which the teams have twenty overs each. Both of the limited overs forms are played internationally as Limited Overs Internationals (LOI) and Twenty20 Internationals (T20I). List A was introduced in England in the 1963 season as a knockout cup contested by the first-class county clubs. In 1969, a national league competition was established. The concept was gradually introduced to the other leading cricket countries and the first limited overs international was played in 1971. In 1975, the first Cricket World Cup took place in England. Twenty20 is a new variant of limited overs itself with the purpose being to complete the match within about three hours, usually in an evening session. The first Twenty20 World Championship was held in 2007. Limited overs matches cannot be drawn, although a tie is possible and an unfinished match is a "no result".[120][121]
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