|Born||December 7, 1857
|Known for||Dollo's law|
Louis Antoine Marie Joseph Dollo (December 7, 1857– April 19, 1931) was a French-born Belgian palaeontologist, known for his work on dinosaurs. He also posited that evolution is not reversible, known as Dollo's law. Dollo established the principles of paleobiology.
Louis Dollo was born in Lille, Nord-Pas-De-Calais. In 1877 he graduated as valedictorian from École Centrale de Lille, with a degree in engineering. After graduation he worked in the mining industry. For three years starting in 1878, he supervised the excavation of the famous, multiple Iguanodon find, at Bernissart, Belgium. He devoted himself to their study as a scientific passion in parallel with his engineering career. In 1882 he moved to Brussels and became an assistant naturalist at the Royal Belgian Institute of Natural Sciences. Dollo was given membership in the Société des sciences de Lille and the Geological Society of London.
From 1882 to 1885, while he was docent of the vertebrate fossil section of the Royal Institute, Dollo worked on reconstructing the skeletons of the Iguanodons, as it was necessary to display them on their hind legs. The first one was assembled in the interior of an unused church that Dollo was using as a workshop. Twelve of those skeletons have been the principle attraction of the Museum of Natural Sciences at the Royal Institute. Dollo collaborated with his former professor Alfred Giard and the Université Lille Nord de France.
Around 1890, he formulated a hypothesis on the irreversible nature of evolution, known later as "Dollo's Law." According to his hypothesis, a structure or organ lost during the course of evolution would not reappear in that organism. This hypothesis was largely accepted until Michael F. Whiting's 2003 discovery that certain insects that had lost their wings regained them millions of years later. However, it was redeemed on the molecular level in 2009 as a result of a study on glucocorticoid receptors.
Dollo continued his work with fossils, in addition to studies of dinosaurs and their ecology. In terms of their ecology, he was the first to address that issue, taking into account fish, reptiles, and birds.
Recently, the stochastic Dollo model is being used to analyze matrix of cognates statistically. In linguistics, this model permits newly coined cognate to arise only once on a tree languages.
- Hypsilophodont, 1882
- Cryptodira Eurysternidae, 1886
- Boulengerina, 1886
- Iguanodontia, 1888
- Prognathodon, 1889
- Racovitzia glacialis, 1900
- Gerlachea australis, 1900
- Bathydraco scotiae, 1906
- Macrourinae Cynomacrurus, 1909
- Gould, S J (1970). "Dollo on Dollo's law: irreversibility and the status of evolutionary laws". Journal of the History of Biology (Netherlands) 3 (2): 189–212. doi:10.1007/BF00137351. PMID 11609651.
- Pagel, Mark (May 2009). "Human language as a culturally transmitted replicator". Nature Reviews Genetics (Macmillan Publishers Limited.) 10 (6): 405–15. doi:10.1038/nrg2560. PMID 19421237.
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