The footprints were discovered by amateur paleontologist Kerry Rees on a beach in Penarth, Wales last year.
They occur over a 50 meter long stretch of coastline.
The study said “evidence of large tetrapods from the late Triassic from Britain is rare” before adding that the spores have not yet been linked to an exact species.
Co-author of the paper, Professor Paul Barrett, who researches dinosaurs at the Natural History Museum in London, said the number of footprints allows the site to be a place where sauropods gathered.
“There are hints of tracks made by individual animals, but because there are so many prints of slightly different sizes, we think there is more than one track maker involved,” he said.
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“These types of tracks are not very common worldwide, so we think this is an interesting addition to our knowledge of Triassic life in the UK.
“Our record of Triassic dinosaurs in this country is quite small, so anything we can find from the period adds to our picture of what was going on at that time.”
Sauropod dinosaurs were herbivores and the largest land animals that roamed the earth.
They first evolved in the early Jurassic period, 201 million to 174 million years ago, and continued into the Cretaceous.
In May this year, a team of paleontologists found large bones belonging to a sauropod dinosaur in outback Queensland.
Robyn Mackenzie, director and paleontologist at the Eromanga Natural History Museum, told 9News.com.au that the bones probably belong to a new species, which she estimated to be about 95 million years old.