Um novo espécime de escorpião vinagre (arachnida; thelyphonida) da formação Crato, cretáceo inferior do Brasil

Abstract

Fossil whip scorpions (Thelyphonida) are extremely rare in the Crato Formation strata, Araripe Basin, Lower Cretaceous (Aptian) of Brazil. Only four specimens of whip scorpions have been described in this unit so far. All specimens have been assigned to the genus Mesoproctus Dunlop, 1998 and only one species has been formally proposed, M. rowlandi Dunlop,1998. For Mesozoic times, apart from Crato Formation, whip scorpions are only documented by three species in the amber deposits of the Hukawng Valley, northern Myanmar. In this scenario, each new discovery of Mesozoic whip scorpion is highly important. Here, we present and illustrate a new specimen of whip scorpion found in the Crato strata.