Willi Hennig
Biologist and entomologist, founder of phylogenetic systematics

Born
April 20th, 1913
112 years ago
Died
1976
49 years ago — 63 years old
Category
Scientists & Innovators
Country
Germany
Links & References
A German biologist and entomologist contributed significantly to the field of systematics. Established the principles of phylogenetic systematics, a method that classifies organisms based on evolutionary relationships. Developed the concept of cladistics, which emphasizes the use of shared derived characteristics for classification. Authored the influential book 'Phylogenetic Systematics' in 1966, which spurred a new direction in biological classification. His work laid the groundwork for modern evolutionary biology.
Founded phylogenetic systematics
Published 'Phylogenetic Systematics' in 1966
Developed the concept of cladistics
Other People Born on April 20th
Fatin Rüştü Zorlu
Held significant roles in Turkish diplomacy during important historical periods. Served as the Turkish Ambassador to the United States from 1950 to 1952, navigating complex geopolitical landscapes of the Cold War era. Played a key part in international negotiations, particularly regarding Turkey's strategic alliances. Advocated for Turkey's position in global affairs and contributed to key treaties and alliances that shaped the region's diplomatic relations. Involved in politics throughout his career, impacting Turkey's foreign relations through various governmental and diplomatic capacities.
Continue ReadingVladimir Vidrić
A prominent Croatian poet and lawyer, contributed significantly to Croatian literature during the early 20th century. Published several influential poetry collections that explored themes of nature, identity, and human emotion. Worked as a public servant, balancing a legal career with literary pursuits. His poetry captured the spirit of the time and is celebrated for its lyrical qualities and depth of emotion.
Continue ReadingDavid Brainerd
Served as a missionary to Native American tribes in the early 18th century. Focused on evangelizing among the Delaware Indians and other groups in the northeastern United States. Brainerd's writings, particularly his diary, documented his experiences and struggles during his mission work. His efforts contributed to the spread of Christianity among Native Americans and his life influenced subsequent missionary efforts. Died at a young age, with many of his writings published posthumously.
Continue ReadingJiří Dienstbier
Started a career in journalism, focusing on political issues and dissidence in Czechoslovakia. Activism against the Communist regime led to imprisonment. After the Velvet Revolution, served as the first Minister of Human Rights and Minorities in the Czech Republic from 1998 until 2002. Contributed to the democratization process and the development of human rights policies in the country. Involved in various media outlets and continued to influence political discourse until death in 2011.
Continue ReadingAlexander Dianin
Born in 1851, a significant figure in Russian chemistry, focused on organic chemistry. Contributions include the synthesis of Dianin's compound, which plays a role in the study of complex organic molecules. Engaged in research involving the structure of organic compounds and their applications. Dianin also made strides in improving methodologies for synthesis, influencing future research in the field.
Continue ReadingHarold Lloyd
An influential American actor, director, and producer in the silent film era. Began career in the early 1900s, achieving considerable fame through the use of elaborate stunts and comedy. Co-founded the production company Harold Lloyd Films, which produced several successful films. Iconic works include 'Safety Last!' and 'The Freshman', both showcasing innovative film techniques and comedic timing. Transitioned successfully to sound films, maintaining a prominent presence until the decline of silent cinema. His legacy is marked by a distinct style that influenced generations of filmmakers and comedians.
Continue Reading