For simplicity, Australia and the other continents have been listed as continental landmasses. The regions used are continents except in the case of smaller landmasses (e.g. Cuba). Many bridges are built across the lagoon connecting the landmasses and the islands. A land bridge is an isthmus connecting the Earth's major landmasses. The continental landmasses listed below are not normally known as islands. A continent is one of several very large landmasses. In addition, there are numerous smaller islands surrounding both landmasses. Two eastward-facing ferry docks separated the three numbered landmasses. A terrestrial globe shows landmasses and water bodies. Sauropods were still the dominant herbivores in the Gondwanan landmasses, however. This is due to strong continental winds travelling over the sea from surrounding great landmasses. There are four major continuous landmasses on Earth&colon; Afro-Eurasia, the Americas, Antarctica and Australia. Floral affinities among these now-distant landmasses date from the Gondwanaland period. The first large cratonic landmasses formed during the Archean eon. When docked on landmasses or warships, exploration occurs on foot.