He said additional excavations conducted as recently as 2015 enabled closer study of the tracks.
Those left by the sauropod#8217;s feet span 94 to 103 cm and the total length can reach up to 3 metres when including the mud ring displaced by each step.
The findings were published in the journal Geobios.
It turned out the prints found in 2009 are part of a 110-step trackway that extends over 155 metres world record for sauropods, which were the largest of the dinosaurs.
Julien added: #8220;The footprints reveal five elliptical toe marks, while the handprints are characterised by five circular finger marks arranged in an arc.
#8220;The presence of large dinosaurs indicates the region must have been studded with many islands that offered enough vegetation to sustain the animals.