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Abstract The vast majority of Cenozoic fossil records of mayflies (Ephemeroptera) are represented by adult specimens, and Eocene Baltic amber is no exception. Representatives of the family Heptageniidae Needham, 1901 were described from adult males and females during the mid-twentieth century by Georges Demoulin, whose work substantially advanced the knowledge of this rheophilous component of the fossil aquatic insect fauna.
Abstract The adult holotype of the fossil mayfly Astraeoptera cretacica Brandão et al. 2021 from the Cretaceous Crato Formation, Brazil, is reviewed and attributed to a new family Astraeopteridae fam. nov. Based on alate specimens, we also describe further new representatives of Astraeopteridae fam. nov., namely Astraeoptera vitrea sp. nov. and Astraeoptera oligovenata sp. nov., as well as the new genus and species Eosophobia acuta gen. et sp. nov.
Abstract Continental ecosystems of the middle Permian Period (273–259 million years ago) are poorly understood. In South Africa, the vertebrate fossil record is well documented for this time interval, but the plants and insects are virtually unknown, and are rare globally. This scarcity of data has hampered studies of the evolution and diversification of life, and has precluded detailed reconstructions and analyses of ecosystems of this critical period in Earth’s history.
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