Cretaceous Mayfly Larva Insect Fossil

Fossil Mayfly

Insecta Order Ephemeroptera Indet.

Geological Time: Lower Cretaceous Late Aptian-Cenomanian (108-92 million years ago)

Size (25.4 mm = 1 inch): 13 mm (overall) Matrix: 74 mm by 50 mm

Fossil Site: Crato Formation, Nova Olinda Member, Ceara, Brazil

Code: BI048

Price: $95.00


Cretaceous Mayfly Insect FossilDescription: The Araripe Basin of Brazil is home to a fantastic array of exquisitely-detailed Early Cretaceous fossils, some of which have been preserved in three dimensions. While the entire formation has until the last decade or so been termed the Santana Formation, David Martill has separated out the slightly older insect-bearing strata as the Nova Olinda Member of the Crato Formation. Quarrying operations for the purposes of obtaining paving stones exposes the remarkable insect fauna in much the same way that quarrying for lithographic limestone in Solnhofen has afforded a panoply of wonderfully-preserved Jurassic fossils in Germany. In addition to the many orders of insects, spiders, scorpions, decapod crustaceans, and many plants have been found. Interestingly, to date no pterosaurs or terrestrial vertebrates have been found, in stark contrast to the overlying Santana Formation deposits. This fine example shows a larval mayfly in dorsal view. The Ephemroptera arose during the Permian. The name refers to the ephemeral existence of adults who live for a few hours to a few days post-emergence.

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