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under the commonly used IAST transliteration system, but is pronounced closer to "swastika" when letters are used with their English values. Left: a left facing swastika, also called counterclockwise, appears in the Bon tradition; Right: a right facing swastika, typically called clockwise, appears commonly in Buddhism, Hinduism and Jainism.The first attested use of the word swastika in a European text is found in 1871 with the publications of Heinrich Schliemann, who while crudely digging the Hisarlik mound near the Aegean Sea coast, for the lost history of Troy (Trojan war), discovered over 1,800 ancient samples of the swastika symbol and its variants. Although all swastikas are bent crosses based on a chiral symmetry, they appear with different geometric details: as compact crosses with short legs, as crosses with large arms and as motifs in a pattern of unbroken lines."More than 3.5 billion years ago, small single-celled organisms acquired the capacity to photosynthesize" "Plants were restricted to the aquatic world until three billion years later, the first uncontroversial evidence for life is found 2,700,000,000 years ago.The reference relates to sulphate and iron reduction as early forms of microbial respiration.

According to Monier-Williams, a majority of scholars consider it a solar symbol, and in the ancient Indian texts the base swasti is equivalent to "may it be well with thee! The compact swastika can be seen as a chiral irregular icosagon (20-sided polygon) with fourfold (90°) rotational symmetry.Birds, at over 10,000 living species, Through the first half of the 20th century, before birds were recognized to be dinosaurs, most of the scientific community believed dinosaurs to have been sluggish and cold-blooded.Most research conducted since the 1970s, however, has indicated that all dinosaurs were active animals with elevated metabolisms and numerous adaptations for social interaction. Evidence suggests that egg laying and nest building are additional traits shared by all dinosaurs.This article deals primarily with non-avian dinosaurs.Dinosaurs are a varied group of animals from taxonomic, morphological and ecological standpoints.