Question: The rock group Dartz! is what style of indie rock that emerged in the late 1980's in the United States?

<P0-S0> Dartz! <P0-S1>  (often stylized as DARTZ!) <P0-S2>  were a Math rock group from Middlesbrough in North East England (UK) who formed at the beginning of 2005. <P0-S3>  They are signed to Xtra Mile Recordings in the UK and Deep Elm in the US, and released one full-length album, one mini-album, three singles and a split 7" via Xtra Mile - as well as an EP on Sunderland based DIY micro-label Fakedream Records, and a split 10" with Scottish band Stapleton on Gravity DIP. <SEP> <P1-S0> The Shaky Hands were a Portland, Oregon-based rock group, formed in 2003 by musician Paul Culp, of "Lonesome Radio Heart" and Colin Anderson. <P1-S1>  Nicholas Delffs joined soon after on vocals and guitar. <P1-S2>  They spent the next three years gradually building a following in the Portland area and self-releasing two CDs, one informally called "The Skidmore Days", which is a lo-fi full-length album recorded in future guitarist Jeff Lehman's North Portland basement and mixed by Alex Arrowsmith. <P1-S3>  They also released a self-titled EP informally referred to as the "Bonnie Doon EP", in reference to the location it was recorded. <P1-S4>  The Shaky Hands were signed to Holocene Music in late 2006. <P1-S5>  By this time, the lineup had changed considerably, with Mayhaw Hoons replacing Culp (who left in late 2004) on bass and the addition of second guitarist Jeff Lehman. <P1-S6>  Nathan Delffs (Nicholas' brother, and member of The Castanets) joined shortly thereafter on percussion and lap steel. <P1-S7>  Their sound is a fusion of 1960s style British Invasion bands such as The Kinks, The Who and The Zombies and American folk-rock in the vein of Neil Young. <P1-S8>  The result is what many have described as a loose, jangly, rootsy style of indie rock. <P1-S9>  The Delffs brothers (along with most of the members of Shaky Hands) also perform Shaky Hands songs (alongside original compositions) under the Death Songs moniker, a more experimental and folk-oriented side project. <SEP> <P2-S0> This is a list of rock music genres consisting of subgenres of popular music that have roots in 1940s' and 1950s' rock and roll, and which developed into a distinct identity as rock music in the 1960s, particularly in the United Kingdom and the United States. <P2-S1>  By the late 1960s, a number of identifiable rock music subgenres had emerged, including hybrids like blues rock, folk rock, country rock, and jazz-rock fusion, many of which contributed to the development of psychedelic rock influenced by the counter-cultural psychedelic scene. <P2-S2>  New genres that emerged from this scene included progressive rock, which extended the artistic elements; glam rock, which highlighted showmanship and visual style; and the diverse and enduring major subgenre of heavy metal, which emphasized volume, power, and speed. <P2-S3>  In the second half of the 1970s, punk rock both intensified and reacted against some of these trends to produce a raw, energetic form of music characterized by overt political and social critiques. <P2-S4>  Punk was an influence into the 1980s on the subsequent development of other subgenres, including new wave, post-punk and eventually the alternative rock movement. <P2-S5>  From the 1990s alternative rock began to dominate rock music and break through into the mainstream in the form of grunge, Britpop, and indie rock. <P2-S6>  Further fusion subgenres have since emerged as well as conscious attempts to revisit rock's history. <SEP> <P3-S0> Math rock is a style of indie rock that emerged in the late 1980s in the United States, influenced by post-hardcore, progressive rock bands such as King Crimson and 20th century minimal music composers such as Steve Reich. <P3-S1>  Math rock is characterized by complex, atypical rhythmic structures (including irregular stopping and starting), counterpoint, odd time signatures, angular melodies, and extended, often dissonant, chords. <P3-S2>  It bears similarities to post-rock.