Haeckel studied under Karl Gegenbaur at the University of Jena for three years, earning a doctorate in zoology, before becoming a professor of comparative anatomy at the University of Jena, where he remained for 47 years, from 1862 to 1909.

Haeckel named thousands of new species from 1859 to 1887.

The series of twenty-four embryos from the early editions of Haeckel ’ s Anthropogenie remain the most famous.

His ’ depiction of embryological development strongly differs from Haeckel ’ s depiction, for His argues that the phylogenetic explanation of ontogenetic events is unnecessary.

The underlying debate between Haeckel and His derives from differing viewpoints regarding the similarity or dissimilarity of vertebrate embryos.

Nevertheless, Bischoff ’ s main argument was in reference to Haeckel ’ s drawings of human embryos, for Haeckel is later accused of miscopying the dog embryo from him.

Image: Haeckel Actiniae. jpg | Sea anemones from Ernst Haeckel's Kunstformen der Natur ( Artforms of Nature ), 1904.

While often seen as rejecting Darwin's theory of branching evolution for a more linear Lamarckian " biogenic law " of progressive evolution, this is not accurate: Haeckel used the Lamarckian picture to describe the ontogenic and phylogenic history of the individual species, but agreed with Darwin about the branching nature of all species from one, or a few, original ancestors.

In fact, ontogeny evolves – the phylogenetic history of a species cannot be read directly from its ontogeny, as Haeckel thought would be possible, but characters from ontogeny can be ( and have been ) used as data for phylogenetic analyses ; the more closely related two species are, the more apomorphies their embryos share.

In the case of echinoderms, he argued that the bilateral larvae must have been introduced after the establishment of the existing classes, and he challenged Haeckel ’ s view that these larvae are evidence that echinoderms evolved from bilateral ancestors.

The term nekton was coined in 1890 by Ernst Haeckel ; it is rooted in the Greek adjective νηκτός nēktós (" the swimming ") derived from the verb νήχειν nḗkhein (" to swim ").

The complete phrase " argument from poor design " has rarely been used in the literature, but arguments of this type have appeared many times, sometimes referring to poor design, in other cases to suboptimal design, unintelligent design, or dysteleology ; the last is a term applied by the nineteenth-century biologist Ernst Haeckel to the implications of organs so rudimentary as to be useless to the life of an organism (, p. 331 ).

In his Die Welträtsel of 1899 ( The Riddle of the Universe 1901 ), Haeckel upheld a unity of organic and inorganic nature and derived all actions of both types of matter from natural causes and laws.

Sending and receiving letters from Leo Tolstoy, Thomas Edison, Nichola Tesla, Booker T. Washington, Elizabeth Cady Stanton, Ernst Mach, Ernst Haeckel, John Dewey, and many more.

In contrast to most of Darwin's supporters, Ernst Haeckel put forward a doctrine of evolutionary polygenism based on the ideas of the linguist and polygenist August Schleicher, in which several different language groups had arisen separately from speechless prehuman Urmenschen, which themselves had evolved from simian ancestors.

A student of Ernst Haeckel, he was graduated from the University of Jena in 1885 with a Ph. D. From 1886 on, he worked as an instructor at the University of Strasbourg.

Ernst Haeckel | Haeckel's Paleontological Tree of Vertebrates ( c. 1879 ).</ br > The evolutionary history of species has been described as a " phylogenetic tree | tree ", with many branches arising from a single trunk.

As a philosopher, Ernst Haeckel wrote Die Welträtsel ( 1895 – 1899, in English, The Riddle of the Universe, 1901 ), the genesis for the term " world riddle " ( Welträtsel ); and Freedom in Science and Teaching to support teaching evolution.

On the other hand, Michael K. Richardson, Professor of Evolutionary Developmental Zoology, Leiden University, while recognizing that some criticisms of the drawings are legitimate ( indeed, it was he and his co-workers who began the modern criticisms in 1998 ), has supported the drawings as teaching aids, and has said that " on a fundamental level, Haeckel was correct "

The term " pleiotropie " was coined in a 1910 Festschrift written by the German geneticist Ludwig Plate, a former student of Ernst Haeckel.

Ernst Haeckel described a taxon comprising tunicates, cephalochordates, and vertebrates in 1866.

As a result of his letters and, no doubt, personal conversations, Huxley and Haeckel were convinced that, at the time he wrote Principles, he believed new species had arisen by natural methods.

These ( Nassellaria and Spumellaria ) were reported in the Report on Radiolaria ( 1887 ) written by Ernst Haeckel.

Haeckel was a zoologist, artist, writer, and later in life a professor of comparative anatomy.

Haeckel, who admired Darwin's work, defined ecology in reference to the economy of nature, which has led some to question whether ecology and the economy of nature are synonymous.

Ernst Haeckel.

Haeckel ( left ) with Nicholai Miklukho-Maklai, his assistant, in the Canary Islands | Canaries, 1866.

also written von Haeckel, was an eminent German biologist, naturalist, philosopher, physician, professor and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including anthropogeny, ecology, phylum, phylogeny, stem cell, and the kingdom Protista.

Haeckel promoted and popularized Charles Darwin's work in Germany and developed the controversial recapitulation theory (" ontogeny recapitulates phylogeny ") claiming that an individual organism's biological development, or ontogeny, parallels and summarizes its species ' evolutionary development, or phylogeny.

In 1852, Haeckel completed studies at Cathedral High School ( Domgymnasium ) of Merseburg.

In 1857, Haeckel attained a doctorate in medicine ( M. D.

The occupation of physician appeared less worthwhile to Haeckel, after contact with suffering patients.

During a trip to the Mediterranean, Haeckel named nearly 150 new species of radiolarians.

From 1866 to 1867, Haeckel made an extended journey to the Canary Islands with Hermann Fol and during this period, met with Charles Darwin, in 1866 at Down House in Kent, Thomas Huxley and Charles Lyell.

Haeckel's wife, Agnes, died in 1915, and Haeckel became substantially more frail, with a broken leg ( thigh ) and broken arm.

Haeckel died on August 9, 1919.

Rather than being a strict Darwinian, Haeckel believed that racial characteristics were acquired through interactions with the environment and that ontogeny directly followed phylogeny.

In 1905, Haeckel founded a group called the " Monist League " to promote his religious and political beliefs.

Haeckel was a zoologist, an accomplished artist and illustrator, and later a professor of comparative anatomy.

For example, Haeckel described and named hypothetical ancestral microorganisms that have never been found.

Franklin retired from editing and publishing at the age of 42, and for the next forty-two years devoted himself to public, scientific, and philanthropic interests.

The 1958 military pay act departed from this established formula by providing for a 6% increase rather than a proportionate increase for everyone retired prior to its effective date of June 1, 1958.

Mr. Reama, far from really being retired, is engaged in industrial relations counseling.

Since Election Day, Vice President Richard Nixon had virtually retired -- by his own wish -- from public view.

One of the local callers, a retired brigadier apparently left over from Kipling's tales of India, does not approve of the way Larkin gets his birds.

Andre Kirk Agassi (; born April 29, 1970 in Las Vegas, Nevada ) is a retired American professional tennis player and former World No. 1, who was one of the game's most dominant players from the early 1990s to the mid 2000s.

His name was derived from two other fictional detectives of the time: Marie Belloc Lowndes ' Hercule Popeau and Frank Howel Evans ' Monsieur Poirot, a retired Belgian police officer living in London.

Poirot had been forcibly retired from the Belgian police force prior to the time he met Hastings in 1916 as a refugee on the case retold in The Mysterious Affair at Styles.

Brearley retired from Test cricket in 1979 and was succeeded by Ian Botham, who started the 1981 series as England captain, by which time the WSC split had ended.

Glenn McGrath, Shane Warne and Justin Langer retired from Test cricket after that series, while Damien Martyn retired during the series.

Andrew Flintoff retired from Test cricket soon afterwards.

Alexios became estranged from Maria, who was stripped of her imperial title and retired to a monastery, and Constantine Doukas was deprived of his status as co-emperor.

He declined offers from German bishops and finally retired to the monastery of Cluny, where he died at a high age, leaving behind a solid reputation for piety and intelligence.

When Absalon retired from military service in 1184 at the age of fifty-seven, he resigned the command of fleets and armies to younger men, like Duke Valdemar, the later king Valdemar II.

Spalding retired from playing baseball in 1878, although he continued as a major force as owner of the White Stockings and major influence on the National League.

The holdings were incorporated in the United States Steel Corporation, a trust organized by Morgan, and Carnegie retired from business.

Carnegie, a self-proclaimed to devotee of Spencer is also noted as saying " My business is to do as much good in the world as I can ; I have retired from all of their business.

He formally retired in 1988 and within a few years moved to the Pyrenees, where he currently lives in isolation from human society.

He retired from scientific life around 1970, after having discovered the partly military funding of IHÉS ( see pp. xii and xiii of SGA1, Springer Lecture Notes 224 ).

Blank retired from the company in 2001 as co-chairman.

In that year he became Kappellmeister of the Imperial Chapel upon the death of Giuseppe Bonno ; as Kappellmeister he conducted the music and musical school connected with the chapel until shortly before his death, being official retired from the post in 1824.

When Salieri retired from the stage, he recognized that artistic styles had changed and he felt that he no longer had the creative capacity to adapt or the emotional desire to continue.

She retired from politics at the 2010 general election.

In 1805, aged 67, he retired from the Navy with the rank of Admiral of the Blue, and spent most of the rest of his life at Bath.