[4] The Lourinhã Formation is located within the Lusitanian Basin, a mostly onshore North South orientated rift basin within western Portugal, formed during the Opening of the North Atlantic Ocean, with sediment deposition beginning during the Late Triassic-Early Jurassic.

It primarily consists of syn-rift near-coastal continental siliciclastic sediments, with several marine intercalations.

The Praia da Amoreira-Porto Novo Member is composed of the Priaia de Amoreira Member, which consists of massive mudrock-sand with metre thick sandstone lenses, with massive mudrock with calcrete.

It is interpreted to be latest Kimmeridgian in age, and overlies the Consolacao Unit at the top of the Aulacostephanus eudoxus ammonite zone.

[4][5] The Praia Azul Member, formerly known as the Sobral unit/member is 80 to 130 metres thick and consists of tabular marls and mudstones, with rare sandstones bodies.

There are three distinct laterally extensive (>20 km) thin shelly carbonate horizons within this member, indicating brief marine transgressions.

It is predominately late Tithonian in age, with the last few metres probably being earliest Berriasian, with the top of the formation roughly correlative with the base of the magnetochron M18n.

(~144.7 Ma)[6][4] The environment of deposition is interpreted as being an upper fluvial-dominated delta to meandering fluvial systems flowing on a paralic plain.

The study created a cladogram showing the possible relations of all Portuguese dinosaurs, including those at the time known from the Lourinhã Formation.

[7] Lusitanosaurus Dacentrurus Dracopelta Alocodon Trimucrodon Taveirosaurus Hypsilophodon Phyllodon Dryosaurus Draconyx Camptosaurus Dinheirosaurus Lourinhasaurus Pleurocoelus Lusotitan Ceratosaurus Torvosaurus Lourinhanosaurus Allosaurus Compsognathus Stokesosaurus Richardoestesia Euronychodon Paronychodon Aves Camptosaurus[9] Intermediate[9] Limb material[9] Now referred to its own genus, Draconyx, along with some other material.

[7] Dacentrurus[14] D. armatus[14] Deltapodus[15] D. brodricki[15] Eleven tracks; Nine pes and two manus prints.

[15] Trimucrodon[7] T. cuneatus[7] Amoreira-Porto Novo Member[20] Alocodon[7] A. kuehnei[7] Dinheirosaurus[21] Diplodocidae indet.

[22] Intermediate[22] One Dorsal Vertebra[22] Regarded by Mannion et al. (2012) as being unique from Dinheirosaurus and possibly indicating another diplodocid in the formation, but being non-diagnostic it doesn't warrant description.

[20] Lourinhanosaurus[7][34] L. antunesi[7][34] Three individuals, one largely complete; over 100 eggs with significant amount of skeletal material.

[34] Has come out in various places in the tree, erroneously said to be a megalosaur,[28] mostly accepted to be a carnosaur, probably allosauroid, or basal coelurosaur.

gilmorei[27] Tooth; ML 939[27] Only definite record of this taxon is from the Late Cretaceous of North America, despite erroneous and referrals from other sites in Portugal.

[35] T. tanneri[35] Praia da Amoireira-Porto Novo[20][37] Maxilla, Teeth, Femur; Probable embryo.