MEXICO CITY, Sept 13 (Reuters) - Mexican lawmakers heard testimony that "we are not alone" in the universe and saw the alleged remains of non-human beings in an extraordinary hearing marking the Latin American country's first congressional event on UFOs.

In the hearing on Tuesday on FANI, the Spanish acronym for what are usually now termed Unidentified Anomalous Phenomena (UAP), politicians were shown two artifacts that Mexican journalist and long-time UFO enthusiast Jaime Maussan claimed were the corpses of extraterrestrials.

Jaime Maussan, who had in the past been involved in questionable claims that were later debunked, introduced these specimens in enclosed glass cases to the public. According to scientists from UNAM, a substantial portion of the DNA derived from these specimens cannot be categorised. Reportedly, more than 30% of the DNA had no known parallels, after performing radiocarbon dating and comparing it to existing samples.

Jose de Jesus Zalce Benitez, Director of the Scientific Institute for Health of the Mexican navy, said X-rays, 3-D reconstruction and DNA analysis had been carried out on the remains.

"I can affirm that these bodies have no relation to human beings," he said.

On Wednesday, Julieta Fierro, researcher at the Institute of Astronomy at the National Autonomous University of Mexico, was among those to express skepticism, saying that many details about the figures “made no sense.”

Fierro added that the researchers’ claims that her university endorsed their supposed discovery were false, and noted that scientists would need more advanced technology than the X-rays they claimed to use to determine if the allegedly calcified bodies were “non-human”.

Let me tell you that all this is complete nonsense," Rafael Bojalil-Parra, research reinforcement director at Metropolitan Autonomous University (UAD) in Mexico City, told Live Science in an email...

...Other scientists also denounced the claims. "It is sad to see the well debunked claims of Jaime Maussan returning to the internet," Andrew Nelson, chair of anthropology at Western University in Ontario, told Live Science in an email.

The duo also said the bodies came from Peru and that radiocarbon dating shows they date back 1,000 years....

...if the bodies were aliens, then carbon-14 dating would be useless. "Radiocarbon dating is based on Carbon 14 atoms which are created when the sun's radiation strikes the Earth's upper atmosphere"...

...To radiocarbon date extraterrestrial beings, we would have to know what the rate of production of 14-C was on their home planet, not ours