A two-week dinosaur dig in outback Queensland has unearthed what has been described as a "treasure trove" of massive fossils.

The Australian Age of Dinosaurs at Winton, north-east of Longreach, says scientists and volunteers have found so many bones it will be difficult to fit them into the preparation laboratory at the museum.

The fossils are believed to be 98-million-years-old.

A large plaster jacket containing ribs and limb bones is lifted from the pit at Winton. ( Australian Age of Dinosaurs )

Field palaeontologist David Elliott says they have uncovered giant limbs, vertebrae and two-metre long ribs.

"It is definitely one of the most successful, one of the most exciting and one of the most full on," he said.

"We didn't stop finding stuff - as fast as you would try and dig around one bone, you started uncovering another.

"We had some [plaster] jackets there the size of the back of the ute - they were massive.

"In actual volume, I suppose there is a couple of tonne of bones, and in actual bones I suppose there would have been over a couple of dozen."

Mr Elliott says it will be next year before they begin preparing the bones.

"Because we have got another sauropod that we've been working on and we've been working on it now for nearly eight years I think," he said.

"That is a new species and it is like nothing else on the planet.

"That is being worked on now, hopefully to be named and described at the end of this year.

"Whereas this one here [these bones] will follow on. so I would think probably in 2014, we'll be starting on it."