Eveline Du Bois-Reymond Marcus
A meticulous German zoologist who, alongside her husband, produced foundational illustrations of obscure marine invertebrates from the ocean's depths.
1901–1990 (age 89)·German zoologist and drawer·Birthday: October 6·The Greatest Generation
Biography
Eveline Du Bois-Reymond Marcus dedicated her scientific life to the unseen, cataloging the strange and beautiful world of marine invertebrates. Born into an intellectual family in Berlin, she pursued zoology, eventually marrying fellow scientist Ernst Marcus. Together, they formed a formidable partnership, with Ernst often collecting specimens and Eveline applying her exacting skill as a scientific illustrator and researcher. Her detailed drawings of opisthobranchs (sea slugs), turbellarians (flatworms), and other soft-bodied animals were not merely artistic; they were essential taxonomic tools, providing the clarity needed to identify and classify species. Working for decades at the University of São Paulo after leaving Nazi Germany, her illustrations filled monographs that remain critical references for marine biologists, giving form to creatures most would never see.
The Greatest Generation
1901–1927
Grew up during the Depression, fought World War II, and built the postwar economic boom. Defined by shared sacrifice, institutional trust, and a belief that hard work and loyalty would be rewarded.
Eveline was born in 1901, placing them squarely in The Greatest Generation. The events that shaped this generation — world wars, depression, and rapid industrialization — shaped the world they entered and the choices available to them.
#1 When Eveline Was Born
The biggest hits of 1901
Eveline's Life & Times
The world at every milestone
1901Born
Queen Victoria dies, ending the Victorian era
President: Theodore Roosevelt
1906Started school
San Francisco earthquake devastates the city
President: Theodore Roosevelt
1914Became a teenager
World War I begins
President: Woodrow Wilson
1917Could drive
Russian Revolution overthrows the tsar; US enters WWI
President: Woodrow Wilson
1919Could vote
Treaty of Versailles signed; Prohibition ratified
President: Woodrow Wilson
1922Turned 21
King Tut's tomb discovered in Egypt
President: Warren G. Harding"April Showers" — Al Jolson
1931Turned 30
The Empire State Building opens as the world's tallest
Gas: $0.17/galPresident: Herbert Hoover"Minnie the Moocher" — Cab CallowayBest Picture: Cimarron
1941Turned 40
Pearl Harbor attack brings the US into WWII
Gas: $0.19/galHome: $3,060Min wage: $0.30/hrPresident: Franklin D. Roosevelt"Chattanooga Choo Choo" — Glenn MillerBest Picture: How Green Was My Valley
1951Turned 50
First color TV broadcast in the US
Gas: $0.27/galHome: $7,925Min wage: $0.75/hrPresident: Harry S. Truman"Too Young" — Nat King ColeBest Picture: An American in Paris
1961Turned 60
Yuri Gagarin becomes the first human in space
Gas: $0.31/galHome: $12,500Min wage: $1.15/hrPresident: John F. Kennedy"Tossin' and Turnin'" — Bobby LewisBest Picture: West Side Story
1971Turned 70
Voting age lowered to 18 in the US
Gas: $0.36/galHome: $18,100Min wage: $1.60/hrPresident: Richard Nixon"Joy to the World" — Three Dog NightBest Picture: The French Connection
1981Turned 80
MTV launches; first Space Shuttle flight; AIDS identified
Gas: $1.31/galHome: $52,300Min wage: $3.35/hrPresident: Ronald Reagan"Bette Davis Eyes" — Kim CarnesBest Picture: Chariots of Fire
1990Died at 89
Hubble Space Telescope launched; Germany reunifies
Gas: $1.15/galHome: $79,100Min wage: $3.80/hrPresident: George H.W. Bush"Hold On" — Wilson PhillipsBest Picture: Dances with Wolves
Key Achievements
- Co-authored numerous seminal taxonomic papers and monographs on marine invertebrates with her husband, Ernst Marcus.
- Produced hundreds of precise, detailed scientific illustrations that are still used for species identification today.
- Contributed significantly to the knowledge of opisthobranch and turbellarian fauna in the Atlantic and South American waters.
Did You Know?
The marine gastropod species *Berthella marcus* was named in honor of both Eveline and Ernst Marcus.
She and her husband left Germany in the 1930s due to the Nazi regime, continuing their work in Brazil.
Many of her illustrations were published in the journal "Boletim de Zoologia" from the University of São Paulo.
“The beauty of a marine worm is in the precise arrangement of its bristles.”
