Speculative. “Cretaceous Cavers”, All Yesterdays contest entry by Brian Engh:

“The main idea behind this illustration is that in the 120 million years that dinosaurs ruled the earth, at some point they most likely entered caves, and perhaps even large dinosaurs entered them. As discussed on SV-POW, modern elephants enter caves to exploit their mineral resources, and it was Matt Wedel’s suggestion that perhaps sauropods also did this at some point in their lengthy natural history.” Keep reading

Diamantinasaurus matildae

Source: http://www.dinosaurier-info.de/animals/dinosaurs/pages_d/diamantinasaurus.php

Name: Diamantinasaurus matildae

Name Meaning: Diamantina Reptile

First Described: 2009

Described By: Hocknull et al. 

ClassificationDinosauria, Saurischia, Eusaurischia, Sauropodomorpha, Plateosauria, Massopoda, Sauropodiformes, Anchisauria, Sauropoda, Gravisauria, Eusauropoda, Neosauropoda, Macronaria, Titanosauriformes, Somphospondyli, Titanosauria, Lithostrotia

Diamantinasaurus was a titanosaur actually known from a decent amount of material, including ribs and a pelvis and some ribs. It was found in the Winton Formation, in Queensland, Australia, and lived in the Cenomanian age of the Late Cretaceous, about 93.9 million years ago. While its classification is a tad unclear, we do know a lot about this animal. It was probably between 15 and 16 meters long and around 5 meters tall, and based on closely related species it seems that it would have laid spherical eggs, about 87 to 91 mm in diameter, with robust embryos. It lived alongside many other organisms such as bivalves, fish, turtles, crocodilians, insects, lungfish, pterosaurs, Australovenator, Wintonotitan, Austrosaurus, and unnamed ankylosaurs and hypsilophodonts. It lived amongst ferns, ginkgoes, gymnosperms, and angiosperms - a wide variety of flora. 




Shout out goes to @badashadventures!

Dinosaur of the Day: Diamantinasaurus and Australovenator by MicrocosmicEcology

“Diamantina River Lizard”
Family: Antarctosauridae
Time: Early Cretaceous (100Ma)
Location: Australia
Size (length): 16m (52ft)

“Southern Hunter”
Clade: Megaraptoran
Time: Early Cretaceous (95Ma)
Location: Australia
Size (length): 6m (20ft)