The Mare aux Songes (English: "pond of

taro Taro (; ''Colocasia esculenta'') is a root vegetable. It is the most widely cultivated species of several plants in the family Araceae that are used as vegetables for their corms, leaves, stems and Petiole (botany), petioles. Taro corms are a ...

"; )

swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...

is a

lagerstätte A Fossil-Lagerstätte (, from ''Lager'' 'storage, lair' '' Stätte'' 'place'; plural ''Lagerstätten'') is a sedimentary deposit that preserves an exceptionally high amount of palaeontological information. ''Konzentrat-Lagerstätten'' preserv ...

located close to the sea in south eastern

Mauritius Mauritius, officially the Republic of Mauritius, is an island country in the Indian Ocean, about off the southeastern coast of East Africa, east of Madagascar. It includes the main island (also called Mauritius), as well as Rodrigues, Ag ...

. Many subfossils of recently

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

animals have accumulated in the swamp, which was once a lake, and some of the first subfossil remains of

dodo The dodo (''Raphus cucullatus'') is an extinction, extinct flightless bird that was endemism, endemic to the island of Mauritius, which is east of Madagascar in the Indian Ocean. The dodo's closest relative was the also-extinct and flightles ...

s were found there.

History

In 1865, a British railway engineer working in south-east Mauritius noticed bones that had been disturbed by workers digging

peat Peat is an accumulation of partially Decomposition, decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, Moorland, moors, or muskegs. ''Sphagnum'' moss, also called peat moss, is one of the most ...

. He showed his findings to the government

schoolmaster A schoolmaster, or simply master, is a male school teacher. The usage first occurred in England in the Late Middle Ages and early modern period. At that time, most schools were one-room or two-room schools and had only one or two such teacher ...

at Mahébourg, George Clark, who subsequently uncovered an abundance of

subfossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

dodo bones in the swamp. Clark had been searching for thirty years, having been inspired by Strickland & Melville's monograph about the bird. In 1866, Clark explained his procedure to

The Ibis ''Ibis'' (formerly ''The Ibis''), subtitled ''the International Journal of Avian Science'', is the peer-reviewed scientific journal of the British Ornithologists' Union. It was established in 1859. Topics covered include ecology, conservation, be ...

, an ornithology journal: Dodo-Skeleton Natural History Museum London England

Remains of over 300 dodos were found in the swamp, but only very few skull and wing bones among them, which may be explained by the upper bodies having been washed away or scavenged while the lower body was trapped, which is similar to the way many moa remains have been found in

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

marshes. In 1889, Théodor Sauzier was commissioned to find more dodo remains in the Mare aux Songes. He was successful, and also found remains of other extinct species. Twenty-six museums worldwide have significant holdings of dodo material, almost all found in the Mare aux Songes. In October 2005, after a hundred years of neglect, a part of the Mare aux Songes swamp was excavated by an international team of researchers. To prevent

Malaria Malaria is a Mosquito-borne disease, mosquito-borne infectious disease that affects vertebrates and ''Anopheles'' mosquitoes. Human malaria causes Signs and symptoms, symptoms that typically include fever, Fatigue (medical), fatigue, vomitin ...

, the British had covered the swamp in hard core during their rule over Mauritius, which had to be removed. Many remains were found, including bones of dodos in various stages of maturity, and several bones obviously from the skeleton of one individual dodo, which have been preserved in their natural position. These findings were made public in December 2005 in the

Naturalis Naturalis Biodiversity Center () is a national museum of natural history and a research center on biodiversity in Leiden, Netherlands. It was named the European Museum of the Year 2021. Although its current name and organization are relatively ...

museum in

Leiden Leiden ( ; ; in English language, English and Archaism, archaic Dutch language, Dutch also Leyden) is a List of cities in the Netherlands by province, city and List of municipalities of the Netherlands, municipality in the Provinces of the Nethe ...

. Of the fossils found in the swamp, 63% belonged to turtles of the extinct genus '' Cylindraspis'', and 7.1% belonged to dodos, which had been deposited within several centuries, 4000 years ago. Subsequent excavations suggested that dodos, along with other animals, became mired in the Mare aux Songes while trying to reach water during a long period of severe drought about 4,200 years ago.

Paleofauna

The following animals have been identified from fossils in the Mare aux Songes.

Birds

Reptiles

Mammals

References

{{coord, -20.447, 57.696, type:landmark_region:MU, display=title Pleistocene paleontological sites of Africa Wetlands of Mauritius Swamps of Africa Lagerstätten