名词解释：冈瓦纳古陆冈瓦纳古陆是一个假想的存在于南半球的古大陆（亦称南方大陆），得名于印度中部的冈瓦纳地方，那里的一套地层叫冈瓦那系，南半球各大陆都发现有与之相似的岩系和化石，地质学家推论过去曾是统一的大陆，大约在两亿年前这块大陆分裂成现今的非洲、马... Glossary of terms: Gondwana ancient land Gondwana ancient land is a hypothetical exists in the southern hemisphere ancient continent (also known as the southern continent), named after the Gondwana in central India, where a set of formations called Gondwana Department, the southern hemisphere continent are found in similar rock series and fossils, geologists infer the past was a unified continent, about 200 million years ago the continent split into today’s Africa, the horse ...