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The Crato Formation is a geologic formation of Early Cretaceous (Aptian) age in northeastern Brazil's Araripe Basin. It is an important Lagerstätte for palaeontologists. The strata were laid down mostly during the early Aptian age, about 113 million years ago, in a shallow inland sea. At that time, the South Atlantic was opening up in a long narrow shallow sea.
The family Gryllidae contains the subfamilies and genera which entomologists now term true crickets. They belong to the Orthopteran subfamily Ensifera, having long, whip-like antennae and has been reduced in terms of the older literature, with taxa such as the spider-crickets and allies, sword-tail crickets, wood or ground crickets and scaly crickets elevated to family level. The type genus is Gryllus and the first use of the family name "Gryllidae" was by Walker.
Tapejara is a genus of Brazilian pterosaur from the Cretaceous Period. Tapejara crests consisted of a semicircular crest over the snout, and a bony prong which extended back behind the head.
Araripemys is an extinct marine turtle genus from 112 to 109 million years ago, in the Early Cretaceous Crato and Romualdo Formations of the Araripe Basin in northeastern Brazil. It is one of the oldest known pleurodires.
Nemonychidae is a small family of weevils, placed within the primitive weevil group because they have straight rather than geniculate (elbowed) antennae. They are often called pine flower weevils. As in the Anthribidae, the labrum appears as a separate segment to the clypeus, and the maxillary palps are long and projecting. Nemonychidae have all ventrites free, while Anthribidae have ventrites 1-4 connate or partially fused. Nemonychidae lack lateral carinae on the pronotum, while these are usually present, though may be short, in Anthribidae.
Nemopteridae, the spoonwings, are a family of neuropteran insects. They are also called thread-winged antlions. They are found in the Ethiopian, Palearctic, Australasian and Neotropical realms but absent in North America.
Tupandactylus is a genus of tapejarid pterodactyloid pterosaur from the Early Cretaceous Crato Formation of Brazil.
Nymphidae, sometimes called split-footed lacewings, are a family of winged insects of the order Neuroptera.
Lacusovagus is a genus of azhdarchoid pterodactyloid pterosaur from the Lower Cretaceous of Brazil. It is based on SMNK PAL 4325, a partial upper jaw comprising sections of the skull in front of the eyes. This specimen was found in rocks of the Early Cretaceous-age Nova Olinda Member of the Crato Formation. The skull was long, and unusually wide. The section in front of the combined nasal-antorbital fenestra was relatively short. Also unusual was the combination of its toothless jaws and no bony head crest. Lacusovagus was described in 2008 by Mark Witton. The type species is L. magnificens, meaning "grand lake wanderer", in reference to its large size—it is currently the largest pterosaur known from the Crato Formation with an estimated wingspan of 4.1 meters.
Cladocyclus is an extinct genus of Ichthyodectidae. It was a predatory fish of about 1.20 metres (3.9 ft) in length, found in the Albian Romualdo and Crato Formations of the Araripe Basin in northeastern Brazil. A new species, Cladocyclus pankowskii, was discovered in the Cenomanian Akfabou Formation of Morocco in 2007, and in the Upper Plattenkalk of Italy.
Araripichthys is an extinct genus of prehistoric ray-finned fish that lived from the Aptian to Coniacian stages of the Cretaceous period. The genus is named after the Araripe Basin, where it was found in the Crato and Santana Formations. Other fossils of the genus have been found at Goulmima in Morocco, the Tlayua Formation of Mexico and the Apón Formation of Venezuela.
Beurlenia araripensis is an extinct species of shrimp in its own genus, Beurlenia. It is named after the German palaeontologist Karl Beurlen (1901–1985). Fossils of the shrimp were found in the Crato Formation of the Araripe Basin of northeastern Brazil. A study on the anatomy and morphological variation in Beurlenia araripensis, based on data from fossil samples from the Crato Formation (Brazil), is published by Barros et al. (2021).
Susisuchus is an extinct genus of neosuchian mesoeucrocodylian crocodyliform from the Early Cretaceous of Brazil. Fossils have been found from the Nova Olinda Member of the Aptian-age Crato Formation in the Araripe and Lima Campos Basins of northeastern Brazil. Named in 2003, Susisuchus is the sole member of the family Susisuchidae, and is closely related to the clade Eusuchia, which includes living crocodilians. The type species is S. anatoceps, known from a single partial articulated skeleton that preserves some soft tissue. A second species, S. jaguaribensis, was named in 2009 from fragmentary remains.
Eolepidopterigoidea is an extinct superfamily of moths, containing the single family Eolepidopterigidae, although the genus Undopterix is sometimes placed in a separate family Undopterigidae. The type-genus of the family is Eolepidopterix.
Brachyphyllum is a form genus of fossil coniferous plant foliage. Plants of the genus have been variously assigned to several different conifer groups including Araucariaceae and Cheirolepidiaceae. They are known from around the globe from the Late Carboniferous to the Late Cretaceous periods.
The Araripe Basin is a rift basin covering about 8,000 square kilometres (3,100 sq mi), in Ceará, Piauí and Pernambuco states of northeastern Brazil. It is bounded by the Patos and Pernambuco lineaments, and is situated east of the Parnaíba Basin, southwest of the Rio do Peixe Basin and northwest of the Tucano and Jatobá Basins.
Aymberedactylus is a genus of tapejarid pterosaur from the Early Cretaceous Crato Formation of Brazil. It contains a single species, A. cearensis.
Cratoavis is a genus of enantiornithine birds. The type and only currently described species is C. cearensis, from the Early Cretaceous of Araripe Basin, Ceará, Brazil. The fossil, an articulated skeleton with feathers attached to the wings and surrounding the body, extends considerably the temporal record of the group at South America.
The Santana Group is a geologic group, formerly included as the middle part of the Araripe Group, in the Araripe Basin of northeastern Brazil. The group comprises the Crato, Ipubi and Romualdo Formations and is dated to the Aptian to Albian stages of the Early Cretaceous. The formations of the group were deposited in a lacustrine to subtidal shallow marine environment in the Araripe rift basin.
Locustopsidae is an extinct family of grasshoppers in the order Orthoptera. There are about 17 genera and more than 60 described species in Locustopsidae.
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