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Corella Willmeriana
''Corella willmeriana'' is a solitary tunicate in the family Corellidae. It is native to the eastern Pacific Ocean where it lives on the seabed at depths down to about between Alaska and California. Description Solitary, sessile tunicate. Incurrent and excurrent siphons directed upwards, away from substratum. Without dorsal nerve cord as adult. Identification Solitary ascidians (not reproducing by budding), but not embedded in a common tunic. Individual is usually more than 1 cm in diameter. Tunic transparent or translucent. Attached to a firm substratum. Body is taller than wide. Oral and atrial siphons about the same length. Tunic smooth or irregularly wrinkled. Body not much taller than wide; tunic transparent and colorless; longitudinal muscle bands not obvious beneath the tunic; oral and atrial apertures not borne on distinct siphons. Rectum more than three-fourths the height of the body; atrium not expanded into a pocket in which embryos are brooded. Rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Abbott Herdman
Sir William Abbott Herdman Royal Society of London, FRS Fellow of the Royal Society of Edinburgh, FRSE FLS (5 September 1858, Edinburgh – 21 July 1924) was a Scottish marine zoologist and oceanographer. His zoological author abbreviation is Herdman. Early life and education He was born in Edinburgh the son of the artist Robert Herdman RSA and his wife, Emma Abbott. They lived at 32 Danube Street. He was educated at Edinburgh Academy from 1870 to 1875. Academic career Archibald Geikie taught him geology during his time at the University of Edinburgh. Herdman graduated BSc in 1879 and became the assistant of Sir Charles Wyville Thomson. In this capacity he was placed as Secretary to the Challenger Expedition Commission: overseeing the deciphering of the huge catalogue of information found during this important exploration. In 1880, he became Demonstrator of Zoology at the University of Edinburgh and then, in 1881, the first holder of the Derby Chair of Natural history ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
