Cyrillic script consonants from the older Glagolitic alphabet for sounds not found in Greek. Tradition holds that Cyrillic and Glagolitic were formalized either by Saints Cyril and Methodius who brought Christianity to the southern Slavs, or by their disciples. Paul Cubberley posits that although Cyril may have codified and expanded Glagolitic, it was his students in the First Bulgarian Empire under Tsar Simeon the Great that developed Cyrillic from the Greek letters in the 890s as a more suitable script for church books. Later Cyrillic spread among other Slavic peoples, as well as among non-Slavic Vlachs. Cyrillic and Glagolitic were used for
Cyril Crossland papers result from his stay on the Sudan Coast; his large manuscript on the biology and cultivation of the pearl oyster never found publication. The World Register of Marine Species lists 67 marine species named by Crossland, many of which have become synonyms. Sixty marine species were named after him with the epithet "crosslandi". Cyril Crossland Cyril Crossland (1878 – 1943) was an English zoologist. He worked as an assistant to Charles Eliot. He studied several groups of marine animals, especially the Protozoa, Corals and Molluscs. Cyril Crossland (1878-1943) was born in Sheffield, the son of landscape painter James Henry