unlike modern true crocodiles, which are very similar in size and shape to one another and tend to live in different areas; "sarcosuchus" was just one of many crocodyliformes, of different sizes and shapes, all living in the same area. four other species of extinct crocodyliformes were also discovered in the same rock formation along with the "sarcosuchus", including a dwarf crocodile with a tiny, 8 cm (3 in) long skull. they filled a diverse variety of ecological niches, instead of competing with each other for resources.