Width 86 mm

hace aproximadamente 75 a 73 millones de años

Olorotitan arharensis reached a length of about 8 meters

A Spinosaurus fetus would have been significantly smaller and lacked the distinctive structures fully developed in adults

Machaeroprosopus buceros Paleógeno Width 86 mmMachaeroprosopus buceros was a Late Triassic pseudosuchian archosaur, belonging to the phytosaur group, which inhabited North America approximately 220 to 210 million years ago. It was a large semi aquatic reptile that occupied ecological niches similar to those of modern crocodiles, although it was not directly related to them, but rather represents a convergent lineage within Archosauria. Its most characteristic feature was its extremely elongated