|
Pinna Rudis
''Pinna rudis'', the rough pen shell or spiny fan-mussel, is a species of bivalve mollusc in the family (biology), family Pinnidae. It is the type species of the genus ''Pinna''. Knowledge about this is sparse, with an absence of specific studies and literature. Description ''Pinna rudis'' has a shell that commonly reaches a length of . The rough pen shell has a pair of very fragile, long, triangular, wedge–shaped valves, covered with large, protruding scales arranged in quite regular rows. These scales are more prominent close to the opening of the shell. A half-dozen low ribs radiate from the pointed end and run the length of the valves. Said valves are almost symmetrical, toothless, and transparent on the ends. Their color is usually reddish brown. The spiny fan-mussel lives with the pointed anterior end of its shell vertically anchored to rock or firm sediment by numerous byssus threads. The rear edge of the shell is rounded and free. ''P. rudis'' may be confused with juve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museo Civico Di Storia Naturale Di Milano
The Museo Civico di Storia Naturale di Milano (Milan Natural History Museum) is a museum in Milan, Italy. It was founded in 1838 when the naturalist Giuseppe de Cristoforis donated his collections to the city. Its first director was the taxonomist Giorgio Jan. The Museum is located within a 19th-century building in the Giardini Pubblici Indro Montanelli, Indro Montanelli Garden, near the historic city gate of Porta Venezia. The structure was built between 1888 and 1893 in Neo-Romanesque style with Gothic Revival, Gothic elements. The museum is divided into five different permanent sections: Mineralogy (with a large collection of minerals from all over the world); Paleontology (with several fossils of dinosaurs and other prehistoric organisms); Natural History of Man (dedicated to the origins and evolution of humans with a particular attention to the relationship of the latter with the environment); Invertebrate Zoology (dedicated to mollusks, arthropods and entomology); and V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
