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Specimens were first attributed to Zosterophyllum cf. myretonianum by Corsin in 1933. [3] In 1956 Danzé-Corsin constructed a new species, Z. artesianum to accommodate this plant, arguing that it resembled Z. llanoveranum but had its sporangia arranged in a much laxer spike. [2]
The Sibley Guide to Birds is a reference work and field guide for the birds found in the continental United States and Canada. It is written and illustrated by ornithologist David Allen Sibley . The book provides details on 810 species of birds, with information about identification, life history, vocalizations, and geographic distribution.
Developed by Julius Schäffer to help with the identification of Agaricus species. A positive reaction of Schaeffer's test, which uses the reaction of aniline and nitric acid on the surface of the mushroom, is indicated by an orange to red color; it is characteristic of species in the section Flavescentes. The compounds responsible for the ...
Michel-Lévy interference colour chart issued by Zeiss Microscopy. In optical mineralogy, an interference colour chart, also known as the Michel-Levy chart, is a tool first developed by Auguste Michel-Lévy to identify minerals in thin section using a petrographic microscope.
The large head has the eyes sessile on the sides below the base of the tentacles. The tentacles are far apart, united by a broad veil over the head.
Original file (1,239 × 1,754 pixels, file size: 132 KB, MIME type: application/pdf) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
A small flock of Pilgrim Geese - an example of color-sexing goose; males are white, females are gray The plumage of male and female goose is usually the same. However, there are few auto-sexing goose, which are sexually dimorphic and the sex can be identified by the first look by plumage.