Frances Wieser

Francisca Wieser, also known as Frances A. Wieser, or Francesca Wieser ( – ) was an American scientific illustrator, drafter, artist, and photographic assistant. She worked for the United States Geological Survey, with the title of "paleontologic draftsman". She was known for her drawings of fossils. and her father was a war veteran (1st Maryland Cavalry in the Union Army during the American Civil War) and a visual artist, Louis Wieser (1836–1904). Her younger sister Florence Wieser (1877–1949) also worked as an illustrator and artist at the United States Geological Survey. From early childhood she had a love of creating art. Wieser used a combination of a microscope and drawing, camera lucida, to record fossils that were millions of years old, and was recognized for her ability to capture details of fossils by drawing rather than relying on photography.

Death and legacy Wieser died on January 15, 1949, in Washington, D.C.,

In 1904, the Cythere francisca or C. francisca fossil was named in her honor by the Maryland Geological Survey. In 1911, Ray S. Bassler named the Sceptropora francisca or S. francisca fossil in her honor.

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