The Serra da Galga Formation is a geological formation in Minas Gerais state of southeastern Brazil. Its strata date back to the Maastrichtian, and are part of the Bauru Group. It was originally considered a member of the Marília Formation.
Dinosaur remains are among the fossils that have been recovered from the formation.
Geology The Serra da Galga formation is interpreted as having been deposited under a hot, dry climate. The formation is considered to be of a Late Maastrichtian age.
Fossil content
Crurotarsans Crocodylomorphs of the Serra da Galga Formation Genus Species Location Materials Notes Images Itasuchus I. jesuinoi Area 2 A skull Basal notosuchian Labidiosuchus L. amicum Serra do Veadinho, Area 2 An incomplete lower jaw with the anterior part of the dentary complete, lacking most of the right mandibular ramus and the end of the left mandibular ramus A notosuchian with bizarre dentition Peirosaurus P. torminni Area 2 A fragmented skull and partial postcranial skeleton A peirosaurid Uberabasuchus U. terrificus Serra do Veadinho, Area 2 A peirosaurid
Dinosaurs Three distinct titanosaurids denoted as forms A, B, and C have been found in Area 4. Titanosaurine remains are known from Areas 1 and 2. Indeterminate theropod remains known from Area 1. Indeterminate maniraptor remains known from Area 1. Indeterminate abelisaurid remains are known from Areas 1 and 2. Enantiornithines have also been recovered. An indeterminate abelisauroid tibia, potentially referrable to noasauridae, is known as well.
Sauropods Sauropods of the Serra da Galga Formation Genus Species Location Stratigraphic position Material Notes Images Aeolosaurus Indeterminate A titanosaurian Baurutitan B. britoi Area 1 A titanosaurian Caieiria C. allocaudata Caieira Caudal vetebra A titanosaurianTitanosauriaindet.BR-050 Km 153-153.5, Ponto 1Isolate teeth.Three morphotypes; one is one of the largest known titanosaurs and two are possible juveniles. Trigonosaurus T. pricei Area 1 A titanosaurian, possibly synonymous with Baurutitan. Uberabatitan U. ribeiroi Several postcranial elements A titanosaurian
Theropods Theropods of the Serra da Galga Formation Genus Species Location Stratigraphic position Material Notes ImagesAbelisauridae indet.Indeterminate Isolated teeth Several abelisaurid teeth of varying sizes and morphologiesAbelisauroidea indet.Indeterminate A tibiaAn indeterminate abelisauroid specimen, possibly belonging to a new taxon"Lopasaurus"None given An incomplete right metatarsusA dromaeosaurid. The holotype went missing shortly after 1980, and it has not been recovered sinceYpupiaraY. lopai A right maxilla and dentary (which was associated with a fish jaw)A unenlagiinae paravian
Pterosaurs Pterosaurs of the Serra da Galga Formation Genus Species Location Stratigraphic position Material Notes Images Galgadraco G. zephyrius Serra da Galga Geosite A fragment of the upper beak An azhdarchid pterosaur; the first pterosaur described from the Bauru Group
See also Peirópolis List of dinosaur-bearing rock formations
References