The ecomorphological diversity of extinct elasmobranchs is incompletely known. Here, we describe , a bizarre probable planktivorous shark from early Late Cretaceous open marine deposits in Mexico. tentatively assigned to Lamniformes, characterized by hypertrophied, slender pectoral fins. This previously unknown body plan represents an unexpected evolutionary experimentation with underwater flig...

Palerasnitsynus ohlhoffigen. et sp. n. is described fromBurmese amber of late Albian (Lower Cretaceous) age. This is the first record of the family Psychomyiidae from Burmese amber, and the earliest fossil record of the family. The genus Palerasnitsynusgen. n. differs from all other known psychomyiid genera by the absence of fork III in the forewings.