This passerine bird of the Zosteropidae family was native to the North Mariana Islands. At one point it even populated urban areas, but the introduction of non-native snake species caused it to quickly go extinct. The last sighting dates back to and the species was declared extinct by the IUCN in This bird, which used to live on several islands in the Seychelles, probably went extinct around due to the negative consequences of the introduction of invasive species into its habitat.
Its disappearance was made official by the IUCN in Until this small reptile of the skink family lived on the Caribbean island of Saint Lucia. Subsequent attempts to find it there proved fruitless, as it is believed the species succumbed to the introduction of the mongoose.
Of all the species on this list, this is undoubtedly the most well-known and charismatic. The giant Pinta Island tortoise was a sub-species of the Galapagos tortoise. This enormous reptile was decimated by hunting and the introduction of goats to the island, which led to competition for food.
The IUCN declared the species extinct in the wild in This large snake native to the Caribbean island of Saint Lucia went extinct around This species of lizard was spotted for the last time in , perched on a granite outcrop in the Uruguayan coastal city of Cabo Polonio. It probably went extinct due to growing anthropic disturbance during its reproductive season caused mainly by tourism.
This small reptile lived on the rocky, uninhabited Caribbean island of Redonda in the Antilles archipelago. It was described for the first time in but it suffered a rapid decline due to the introduction of goats and rats.
Its last sighting was in and the IUCN declared it extinct in The last specimen of this reptile was seen in , and there are two hypotheses regarding the cause of its extinction: some believe that non-native mammals like cats and goats took over its environment, while others claim that miners who worked on the island deliberately exterminated it.
At one time this lizard was common in the lush forests of Christmas Island, south of Indonesia, in the Indian Ocean. Researchers began to notice its decline in , caused by various factors such as loss of habitat and the introduction of non-native predators.
A mere seven years later it could no longer be observed in the wild. The last known specimen was a female named Gump, who died in captivity in It probably went extinct due to intense urban development and the introduction of mongooses, cats and rats.
This large lizard lived on four islands in the Lesser Antilles at least until the 17th century. After this, populations gradually declined into oblivion because of the introduction of mice.
It likely went extinct because of invasive species, as officialised by the IUCN in This small freshwater fish of the Cyprinidae family was native to Lake İznik, in Turkey. It disappeared around the end of the 20th century because of the introduction of another species of fish, Atherina boyeri , into its habitat by fishermen. Another member of the Cyprinidae family, this fish lived exclusively in Yilong Lake, China.
Due to heavy water use for agriculture, the lake dried up for over twenty days in This small fish belonging to the Actinopterygii class lived in the waterways around the Mexican city of Veracruz. It was seen for the last time in and probably went extinct due to habitat degradation, water pollution and dam construction. Its definitive disappearance was caused by the growing diversion of water for agriculture and introduction of the largemouth bass. The IUCN added it to the list of extinct species in after decades passed from its last sighting.
This fish of the Cypriniformes order lived at the bottom of Lake Malawi in central Africa, where it was last observed in This led to the species being declared extinct in Dam construction, the destruction of many wetlands and growing pollution levels are believed to have caused its extinction, officialised by the IUCN in This species of fish belonging to the Cichlidae family lived in the Sea of Galilee, in Israel.
According to the IUCN, which declared it extinct in , the last specimen was sighted in and the destruction of its marshy habitat caused its demise. It was a victim of climate change, which led to increased drought in the area. The last time it was observed by naturalists was in and the IUCN declared it extinct in This small freshwater snail once lived in the waterways around Toulouse, France. As the city gradually expanded, and many streams and creeks were destroyed, the species went extinct.
Bythinella limnopsis, Bythinella mauri tanica, Bythinella microcochlia, Bythinella punica. Naturalists classified these four species of freshwater snail found in various springs in Tunisia in the 19th century.
The IUCN declared them extinct in This large ground beetle was native to the high-altitude forests on Pico Island, in the Azores archipelago. Over years have passed since the last sighting and the IUCN declared the species extinct in Like the species above, this ground beetle also lived in the mountain forests of the Azores, on the island of Santa Maria in particular. Its extinction was probably linked to climate change having led to an increase in drought episodes on the island.
Until the population of this freshwater crayfish was stable, but water use by local farmers drained the only pond it inhabited, leading to its extinction, which was made official by the IUCN in This small crayfish lived in a single spring in the Mexican desert, which was also drained for agricultural use. In , a team of scientists claimed to have found a population living in a pond in the Chihuahua desert, which is also at risk of drying up.
The last specimen was observed in , as its habitat was being destroyed by the invasion of cinnamon plants. This millipede lived on the small island of Marianne in the Seychelles archipelago until The island was completely taken over by humans for farming purposes, after which it was abandoned, leaving numerous invasive plants behind.
Scientists lost track of it in — it probably disappeared due to pollution and the expansion of human activities. This worm was seen just once in in the rainforests of Rodrigues island, Mauritius.
Its habitat was razed to the ground for agricultural purposes, causing its extinction, which was made official by the IUCN in Scientists know little about this bivalve mussel from Madagascar and the IUCN declared the species extinct in It was observed for the last time in and the IUCN declared it extinct in This mollusc, whose habitat was a single spring in Spain, was lost because of a road being built near the area where it lived.
This species was the largest earwig in the world, found on the island of Saint Helena in the southern Atlantic. It could grow over eight centimetres in length, and was seen for the last time in Its extinction — confirmed by the IUCN in — was caused by use of the rocks it inhabited in construction activities, as well as competition with non-native species brought by humans. Labidura herculeana from St Helena, Type specimen. This mollusc found in New Caledonia was seen for the last time in The development of human settlements, which caused many springs to dry up and the felling of large wooded areas, probably led to its extinction, officialised by the IUCN in Only one specimen, found in on the island of Java in Indonesia, of this freshwater shrimp has ever been collected.
This species of cockroach was described following the discovery of a single specimen on the Seychelles island of Desroches in The extinction of this grasshopper demonstrates the impact humans have on other species.
It used to be one of the most common invertebrates in North America: a report from describes an uninterrupted swarm extending kilometres wide and 2, kilometres long. Declared extinct in , this mollusc lived in a single thermal spring in the Algerian region of Annaba. It is known only thanks to documents dating back to the 19th century.
This insect was native to a small forest on the island of Santa Maria, in the Azores. A large portion of its habitat was lost due to deforestation and climate change. A series of dams built along the waterway between and irreparably damaged and broke up its habitat, causing its extinction —declared by the IUCN in Like other species native to the island, this invertebrate probably went extinct following the arrival of invasive plants brought by humans.
Its decline has been linked to the arrival of invasive fish species and urban development in the Bay Area. This species of snail was observed only in a limited part of Malaysia.
Its habitat was literally razed to the ground at the beginning of this century by a construction company. A species of Georgian crayfish described in by a biologist who found a single specimen.
It has never been observed since, and the IUCN declared it extinct in Pseudamnicola barratei , Pseudamnicola desertorum, Pseudamnicola doumeti, Pseudamnicola globulina, Pseudamnicola latasteana, Pseudamnicola oudrefica, Pseudamnicola ragia, Pseudamnicola singularis.
In the IUCN declared these eight species of water snails extinct. These gastropod molluscs were extremely sensitive to environmental changes in the springs they inhabited, and are believed to have disappeared during the 19th century.
It was observed for the last time in and disappeared with the destruction of its ecosystem. Paleontologists know about these extinctions from remains of organisms with durable skeletons that fossilized. End of the Cretaceous 66 million years ago : Extinction of many species in both marine and terrestrial habitats including pterosaurs, mosasaurs and other marine reptiles, many insects, and all non-Avian dinosaurs.
The scientific consensus is that this mass extinction was caused by environmental consequences from the impact of a large asteroid hitting Earth in the vicinity of what is now Mexico. Late Triassic million years ago : Extinction of many marine sponges, gastropods, bivalves, cephalopods, brachiopods, as well as some terrestrial insects and vertebrates. The extinction coincides with massive volcanic eruptions along the margins of what is now the Atlantic Ocean.
Most scientific evidence suggests the causes were global warming and atmospheric changes associated with huge volcanic eruptions in what is now Siberia. Late Devonian million years ago : Extinction of many marine species, including corals, brachiopods, and single-celled foraminiferans, from causes that are not well understood yet. Late Ordovician million years ago : Extinction of marine organisms such as some bryozoans, reef-building brachiopods, trilobites, graptolites, and conodonts as a result of global cooling, glaciation, and lower sea levels.
Smithsonian Paleobiologists continue to study the role that past extinctions had on plants, animals, and other species. Gene Hunt studies how the relatedness and diversity of organisms relates to what happens to them in an extinction event.
Richard Bambach conducts research on variation in marine biodiversity in relation to different extinction events. By studying the evolution and extinction of tiny organisms called foraminifera, Dr. Brian Huber assesses how Earth's conditions have changed over time. At the end of the last ice age, 10, years ago, many North American animals went extinct, including mammoths , mastodons , and glyptodonts.
While climate changes were a factor, paleontologists have evidence that overhunting by humans was also to blame. Early humans worked cooperatively to trap and slaughter large animals in pits.
About the same time, humans began farming, settling down and making drastic changes in the habitats of other species. Starting in the s, industrialization drove up extinction rates and has continued to do so. For example, Chinese river dolphins , foothill yellow-legged frogs , and sockeye salmon are among the many species currently endangered by water pollution, dams, and other industrial pressures on rivers. Smithsonian Anthropologist Dr. However, the migratory bird was far larger than the mourning dove and the Old World turtledove.
It has a pinkish body, a blue-gray head, and a longer tail than the average cat. It can grow up to 32cm in length and fly at speeds of up to 60 mph. The native Americans depended on passenger pigeons for food that added to the species population fall. When Europeans arrived in North America , hunting for these pigeons became rampant. Years of hunting, habitat degradation, and predation have resulted in the mass extinction of this species. The fact that this species is no longer able to fly freely in the skies is a tragedy.
Still, it leaves a wonderful legacy to humanity in the form of raising awareness and igniting a conservation movement for various species. Several local grey wolf packs have seen significant declines in population or have even gone extinct for various reasons like the loss of its habitat.
Among these local grey wolves are the wolf population that previously existed in Sicily, known as the Sicilian Wolf. Once, this wolf species thrived on the largest island in the Mediterranean Sea until it was destroyed and eventually became extinct. Because of human activity, the extinction of the Sicilian Wolf has occurred. According to a study, humans are responsible for wolf extinction because of its voracious appetite for livestock owned by farmers.
By Nkensei. The Japanese sea lion, which used to be able to freely swim in the ocean and bask by the bay in the Japanese Archipelago and on the Korean Peninsula, is now a living memory. This animal is not found in the water but rather in textbooks, museums, and legends, because it is one of the animals that have gone extinct in the previous years. Before , it was regarded to be a subspecies of the California sea lion, which it is linked to. It was a part of the eared seal group, which other sea Lions.
They differed from real seals in that they had little permanent earflaps and rear flippers that could be twisted to face forward. The Black sea lion and its other names demonstrate that adult males had a dark coloration, and females had a paler shade, comparable to brown.
According to estimates, 30, to 50, Japanese sea lions roamed freely throughout the shore, but they are now gone. The amazing mammal is on the verge of extinction as a result of several factors. This species did not have any natural enemies, with the exception of humans, who hunted them for their skins, whiskers, and internal organs.
Japanese sea lions were also captured to sell them to circuses. Aside from that, it is a victim of fishing-related persecution and harvesting.
See Related : Caspian Seal. There are a variety of extinct species on the planet. One of these species is the bubal antelope, which is also known as the bubal hartebeest or the bubal hartebeest antelope.
In the previous century, this intriguing species, which was last seen roaming freely in the northern reaches of the Saharan Desert, has been extinct. The bubal hartebeest was described as having a body that was consistently sandy in color. It bears a patch of grayish color on each side of its muzzle above its nostrils, which is distinctive. During the nineteenth century, the subspecies suffered a significant fall, particularly during the French conquest and extermination of this species.
See Related : Endangered Species in California. By twesener. The Tasmanian Tiger, also known as the Thylacine and Tasmanian Wolf, has an intriguing property in that it has 15 to 20 distinctive dark stripes throughout its back from shoulders to tail, which is visible from the shoulders to tail. In addition to the black eye, there are two small brown triangles with orange fur on the outside that sit opposite it.
It has a robust jaw with a considerable number of teeth 46 in total. The Thylacine was primarily active at night or in the early morning hours, but it was also active during the day. The Thylacine hunted alone or in couples, and it did it primarily at night. Kangaroos, smaller animals, and birds make up the bulk of its food. European colonists and farmers hunted down the Tasmanian tiger because they feared it would prey on their sheep, resulting in the extinction of the endangered species.
Another factor contributing to its demise is competition for food with Dingo.
0コメント