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Dromus (mollusc)
''Dromus dromas'', the dromedary pearlymussel or dromedary naiad, is a rare species of freshwater mussel in the family Unionidae. This Aquatic animal, aquatic bivalve mollusk is native to the Cumberland River, Cumberland and Tennessee River systems in the United States, where it has experienced a large population decline. It is a federally listed endangered species of the United States. This mussel is yellow-green in color with interrupted green rays on the shell. The nacre is white, pink, or reddish. The species got its name from the distinctive hump on the shell of larger individuals. A "headwaters form," ''D. dromas'' form ''caperatus'' (Lea, 1845) has additionally been described. This species lives in clear, clean, fast-flowing water. It cannot tolerate water of poor quality, for example, water with silt. Like other freshwater mussels, this species reproduces by releasing larvae called glochidium, glochidia into the water. The glochidia are eaten by fish and lodge in the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isaac Lea
Isaac Lea (March 4, 1792 – December 8, 1886) was an American publisher, Conchology, conchologist and geologist. He was a partner in the publishing businesses Mathew Carey, Matthew Carey & Sons; Carey, Lea & Carey; Carey, Lea & Blanchard; and Lea & Blanchard. He authored multiple books describing the freshwater mussel genus ''Unio (bivalve), Unio'' and named 1,842 species of fifty genera of freshwater and land mollusks. He sparked a scientific controversy amongst geologists when he published about his discovery of fossilized footprints in Mount Carbon, Pennsylvania, that he incorrectly proposed were from a reptile from the Devonian, Devonian Period over 360 million years old. The fossil has since been identified as that of an amphibian from the Mississippian (geology), Mississippian Age over 330 million years old. He served as president of the Academy of Natural Sciences of Drexel University, Academy of Natural Sciences of Philadelphia from 1858 to 1863 and of the American Assoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |