Jules Pierre François Stanislaus Desnoyers (October 8, 1800 – 1887) was a French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 geologist

Geologist

A geologist is a scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes and history that has shaped it. Geologists usually engage in studying geology. Geologists, studying more of an applied science than a theoretical one, must approach Geology using...

 and archaeologist.

Life

Desnoyers was born at Nogent-le-Rotrou

Nogent-le-Rotrou

Nogent-le-Rotrou is a commune in the Eure-et-Loir department in northern France.It is a sub-prefecture and is located on the Huisne River, 56 kilometres west of Chartres on the RN23 and 150 kilometres south west of Paris, to which it is linked by both rail and motorway...

, in the department of Eure-et-Loir

Eure-et-Loir

Eure-et-Loir is a French department, named after the Eure and Loir rivers.-History:Eure-et-Loir is one of the original 83 departments created during the French Revolution on March 4, 1790 pursuant to the Act of December 22, 1789...

. Becoming interested in geology at an early age, he was one of the founders of the Geological Society of France in 1830. In 1834 he was appointed librarian of the Muséum National d'Histoire Naturelle

Muséum national d'histoire naturelle

The Muséum national d'Histoire naturelle is the National Museum of Natural History in Paris, France.- History :The museum was formally founded on 10 June 1793, during the French Revolution...

 in Paris

Paris

Paris is the capital and largest city in France, situated on the river Seine, in northern France, at the heart of the Île-de-France region...

.

Works

His contributions to geological science comprise memoirs on the Jurassic

Jurassic

The Jurassic is a geologic period and system that extends from about Mya to  Mya, that is, from the end of the Triassic to the beginning of the Cretaceous. The Jurassic constitutes the middle period of the Mesozoic era, also known as the age of reptiles. The start of the period is marked by...

, Cretaceous

Cretaceous

The Cretaceous , derived from the Latin "creta" , usually abbreviated K for its German translation Kreide , is a geologic period and system from circa to million years ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the...

 and Tertiary

Tertiary

The Tertiary is a deprecated term for a geologic period 65 million to 2.6 million years ago. The Tertiary covered the time span between the superseded Secondary period and the Quaternary...

 Strata of the Paris Basin and of Northern France, and other papers relating to the antiquity of man, and to the question of his co-existence with extinct mammalia. His separate books were Sur la Craie et sur les terrains tertiaires du Cotentin (1825) and Recherches géologiques et historiques sur les cavernes (1845).