Ludwig Karl Georg Pfeiffer
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Ludwig Karl Georg Pfeiffer, also known as Louis Pfeiffer, was a German physician, botanist and conchologist.
Louis Pfeiffer in 1856
Nassarius pfeifferi, a nassa mud snail named in honor of Pfeiffer
Carl Jonas Pfeiffer
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Carl Jonas Pfeiffer was a German merchant, banker, and amateur malacologist.
Carl's banking interests would eventually become Bankgeschäft L. Pfeiffer and flourish under family directorship for four generations