What is "deul"

Deul or Deoul is a style of temple architecture of northern India and Bengal that arose between the 6th and the 10th centuries and was revived in the 16th-19th century. The later representatives of this style were generally smaller and included features influenced by Islamic architecture. The towers of ek-ratna temples resemble the earlier deul style, as do the central towers of pancharatna and navaratna styles.