A California paranormal group claims to have DNA samples of Bigfoot -- concrete evidence of the legendary creature's existence -- but they want help authenticating them.

Members of the Sanger Paranormal Society will call upon the public to donate money and resources to their Bigfoot research effort at a Thursday afternoon news conference in Fresno, Calif.

The society's founder, Jeffrey Gonzalez, plans to present what he believes is an impression of the creature's face, pressed into two windows on the left-hand side of his pickup truck.

Each windowpane print depicts a seven-inch long pair of lips and a five-inch wide set of nostrils, Gonzalez told CTV.ca in a phone conversation from Fresno.

"We also found a 12-inch long footprint near the car," said Gonzalez, who added that he's preserved the samples in a climate-controlled room.

The prints were discovered 5,500 feet above ground at California's High Sierra mountain range during a six-person Sasquatch hunting expedition, said Gonzalez.

"A forensic expert has swabbed the prints for DNA and taken photographs on scene," said Gonzalez. "Now all we need to do is eliminate the possibility of it being another animal."

Gonzalez said he hopes that an anthropologist or anyone with a database of animal DNA steps forward to help authenticate their samples.

"It's not a hoax, it's not a joke; we have a reputation to protect," said Gonzalez, who works as a technician for AT&T.

Bigfoot enthusiasts became the brunt of many jokes in 2008 when two hikers in Georgia purported to have the creature's body in a freezer. Their hairy corpse turned out to be a rubber hoax.

For Martin Evison, the only place Bigfoot exists is in folklore.

The University of Toronto anthropology professor said he won't consider the possibility of Sasquatch's existence without seeing the creature himself.

"We have so much technology now, if this thing existed we would have found it already," Evison told CTV.ca.

"I don't even bother thinking about Bigfoot. I have better things to do."