Researchers Uncover Remains of Ice Age Mastodons in Peru

Engineer and mastodon researcher Oscar Diaz cleans remains of an Ice Age mastodon, believed to be between 11,000 and 12,000 years old, in Chambara, Peru September 5, 2024. (Museum of Natural History - UNMSM/Handout via Reuters)
Engineer and mastodon researcher Oscar Diaz cleans remains of an Ice Age mastodon, believed to be between 11,000 and 12,000 years old, in Chambara, Peru September 5, 2024. (Museum of Natural History - UNMSM/Handout via Reuters)
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Researchers Uncover Remains of Ice Age Mastodons in Peru

Engineer and mastodon researcher Oscar Diaz cleans remains of an Ice Age mastodon, believed to be between 11,000 and 12,000 years old, in Chambara, Peru September 5, 2024. (Museum of Natural History - UNMSM/Handout via Reuters)
Engineer and mastodon researcher Oscar Diaz cleans remains of an Ice Age mastodon, believed to be between 11,000 and 12,000 years old, in Chambara, Peru September 5, 2024. (Museum of Natural History - UNMSM/Handout via Reuters)

The fossilized remains of three mastodons from the Ice Age have been uncovered in the Peruvian Andes, raising questions as to how the behemoths arrived in the area.

Excavations starting in 2019 uncovered the behemoths, believed to be between 11,000 and 12,000 years old, in the valley of the town of Chambara, about 300 km (186 miles) east of Lima.

One of the specimens is nearly complete, and could be the most preserved mastodon in all of Peru, said paleontologist Ivan Meza.

"If the skull is found - and everything indicates that the tusks are there - that would have scientific importance at a national and global scale," Meza said.

Mastodons were similar to the also-extinct mammoth, but had flatter heads and straighter tusks.

Scientists now hope to find more fossils in the area, which could shed light on how and when the mastodons arrived.

"We're talking about a small area of less than one hectare," Meza said. "To date we've discovered three specimens, with the possibility of there being more, and from other types of animals."

The mastodons likely migrated from North America down to South America in search of food and water as climate conditions changed, experts believe.

"Over time, the Andes mountain range rose and the sea water receded," said researcher Oscar Diaz. "This area dried up and left lagoons across the Mantaro Valley," he added, which would have provided a source of water.

Peru is a rich source of prehistoric remains. In April, a team of paleontologists unveiled the fossilized skull of a river dolphin, the largest found to date, which had swum through the Peruvian Amazon some 16 million years ago.



Monkeys Who Recently Died in Hong Kong's Zoo Had Been Infected with Melioidosis

Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS
Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS
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Monkeys Who Recently Died in Hong Kong's Zoo Had Been Infected with Melioidosis

Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS
Giant tubeworms on the seafloor surface at 2,500 meters water depth at the East Pacific Rise, a volcanically active ridge located where two tectonic plates meet on the floor of the Pacific Ocean in this undated photograph.CC BY-NC-SA Schmidt Ocean Institute/Handout via REUTERS

Nine monkeys who died in Hong Kong's oldest zoo in two days this week had been infected with an endemic disease, possibly after some digging work near their cages, officials said on Friday.

Secretary for Culture, Sports and Tourism Kevin Yeung said in a press briefing that the animals in the Hong Kong Zoological and Botanical Gardens contracted melioidosis and the disease later caused them to develop sepsis, according to The AP.

Yeung stressed that such infections typically occur through contact with contaminated soil and water and that there is generally no danger to humans from contact with infected animals or people.

“We're saddened by the passing of the nine monkeys,” he said.

Eight monkeys were found dead on Sunday, and another died Monday after displaying unusual behavior. The deceased animals were a De Brazza’s monkey, a common squirrel monkey, four white-faced sakis and three cotton-top tamarins — a species listed as critically endangered by the International Union for Conservation of Nature.

According to Hong Kong's Center for Health Protection, melioidosis is caused by the bacterium Burkholderia pseudomallei, which is widespread in soils and muddy water.

Yeung said the park conducted digging work to repair some irrigation pipes under the flower bed near the monkey cages in early October and that the deaths might be related to that.

He said the monkeys might have come into contact with the bacteria after the park's staff walked into their cages with possibly contaminated shoes. Another possibility is that some infected monkeys had close contact with other monkeys, he said.

“The incubation period for melioidosis in primates is about a week and this matched with the period after the soil digging work,” he said.

Edwin Tsui, the controller of the center, said the incident only happened in a single zone and its impact on Hong Kong residents would be very low.

Yeung on Monday held an urgent interdepartmental meeting about the deaths with the Leisure and Cultural Services Department, the Agriculture, Fisheries and Conservation Department and the Department of Health.

Another De Brazza’s monkey also displayed unusual behavior and appetite but offiicials said its condition remained stable on Friday.

The Hong Kong Zoological and Botanical Gardens — the oldest park in the former British colony — fully opened to the public in 1871. It is a rare urban oasis in the downtown Central district of the financial hub, which returned to Chinese rule in 1997.