Atalaia, near Peralta: Late/Upper Kimmeridgian - Early/Lower Tithonian, Portugal
collected by M. de Matos & P. Carreira de Deus 1947

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudinata
Testudinata indet. Oppel 1811
Lapparent and Zbyszewski 1957
Reptilia
Megalosaurus insignis Eudes-Deslongchamps and Lennier 1870
Lapparent and Zbyszewski 1957 8 specimens
nomen dubium belonging to Theropoda
teeth
Sauropoda indet. (Marsh 1878)
Mocho et al. 2016 4 specimens
MG 8809, three dorsal vertebra fragments; MG 8792, two dorsal rib fragments
Reptilia - Brachiosauridae
Brachiosaurus sp. Riggs 1903
1 individual
MIGM 4798, 4801–10, 4938, 4944, 4950, 4952, 4958, 4964–66, 4981–82, 4985, 8793–99 (4 measurements)
    = Brachiosaurus atalaiensis n. sp. Lapparent and Zbyszewski 1957
Lapparent and Zbyszewski 1957
recombined as Lusotitan atalaiensis
Reptilia
Astrodon pusillus Lapparent and Zbyszewski 1957
Lapparent and Zbyszewski 1957 1 specimen
nomen dubium belonging to Dinosauria
vertebra
Reptilia - Crocodylia
Crocodylia indet. (Owen 1842)
Lapparent and Zbyszewski 1957
Actinopteri - Lepisosteiformes
Lepidotes sp. Agassiz 1832
Lapparent and Zbyszewski 1957
scales
unclassified
Tracheophyta indet.
Lapparent and Zbyszewski 1957
"fossil wood"
see common names

Geography
Country:Portugal State/province:Centro County:Lisboa
Coordinates: 39.2° North, 9.3° West (view map)
Paleocoordinates:33.5° North, 1.0° East
Basis of coordinate:estimated from map
Altitude:35 meters
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Late/Upper Jurassic
Key time interval:Late/Upper Kimmeridgian - Early/Lower Tithonian
Age range of interval:152.20000 - 146.30000 m.y. ago
Stratigraphy
Formation:Lourinhã Member:Praia da Amoreira-Porto Novo
Stratigraphic resolution:bed
Stratigraphy comments: orig. Sobral Mb.
Mateus et al. 2017: includes ostracods pointing to a late Kimmeridgian to early Tithonian age in its middle part (Werner, 1986) and the dinocyst Cribroperidinium granuligerum (Klement) “complex” indicating a mid Kimmeridgian to late Tithonian age for the lower part (Taylor et al., 2013).
Lithology and environment
Primary lithology:lenticular claystone
Includes fossils?Y
Lithology description: "large clay lens"
Environment:fluvial indet.
Geology comments: Mateus et al. 2017: The Praia da Amoreiras Mb. was interpreted by Hill (1989) as deposited in the distal mudflat of alluvial fans with both sheetflood and channelized flows shifting on the surface, draining southeastward from the Berlengas basement block; however, Taylor et al. (2013) consider it as deposited by a meandering river system. The Porto Novo Mb. comprises distal deposits of a fluvial meander system grading laterally to tide-influenced upper deltaic deposits with more straight channels, thus including the fluvial–tidal transition zone during limited transgressions.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:medium
Associated major elements:some
Disassociated major elements:some
Fragmentation:frequent
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:selective quarrying,surface (float),mechanical,field collection
Reason for describing collection:general faunal/floral analysis
Collectors:M. de Matos & P. Carreira de Deus Collection dates:Apr 1947
Metadata
Also known as:Portela, Montoito
Database number:47430
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2005-02-24 12:32:40 Last modified:2022-05-06 11:26:56
Access level:the public Released:2005-02-24 12:32:40
Creative Commons license:CC BY
Reference information

Primary reference:
45822. A. F. d. Lapparent and G. Zbyszewski. 1951. Découverte d'une riche faune de Reptiles Dinosauriens dans le Jurassique supérieur du Portugal [Discovery of a rich fauna of dinosaurian reptiles in the Upper Jurassic of Portugal]. Comptes Rendus de l'Académie des Sciences à Paris 233:1125-1127 [M. Carrano/M. Carrano]

Secondary references:

13162ETE M. T. Antunes and O. Mateus. 2003. Dinosaurs of Portugal. Comptes Rendus Palevol 2:77-95 [M. Carrano/M. Carrano/M. Carrano]
12748ETE P. M. Galton. 1981. A juvenile stegosaurian dinosaur, "Astrodon pusillus," from the Upper Jurassic of Portugal, with comments on Upper Jurassic and Lower Cretaceous biogeography. Journal of Vertebrate Paleontology 1(3-4):245-256 [M. Carrano/M. Carrano/M. Carrano]
77475% 18240P. M. Galton. 1990. Stegosauria. The Dinosauria, D. B. Weishampel, P. Dodson, & H. Osmólska (editors), University of California Press, Berkeley 435-455 [M. Carrano/M. Carrano/M. Carrano]
17298ETE R. F. Kingham. 1962. Studies of the sauropod dinosaur Astrodon Leidy. Washington Junior Academy of Science Proceedings 1:38-44 [M. Carrano/M. Carrano]
13143ETE A. F. d. Lapparent and G. Zbyszewski. 1957. Les dinosauriens du Portugal [The dinosaurs of Portugal]. Mémoires des Services Géologiques du Portugal, nouvelle série 2:1-63 [M. Carrano/M. Carrano/M. Carrano]
46153 P. D. Mannion, P. Upchurch, R. N. Barnes and O. Mateus. 2013. Osteology of the Late Jurassic Portuguese sauropod dinosaur Lusotitan atalaiensis (Macronaria) and the evolutionary history of basal titanosauriforms. Zoological Journal of the Linnean Society 168:98-206 [P. Mannion/P. Mannion/P. Mannion]
79466 O. Mateus, J. Dinis, and P. P. Cunha. 2017. The Lourinhã Formation: the Upper Jurassic to lowermost Cretaceous of the Lusitanian Basin, Portugal – landscapes where dinosaurs walked. Ciências da Terra Earth Sciences Journal 19(1):75-97 [P. Mannion/G. Varnham/G. Varnham]
50329 O. Mateus and J. Milàn. 2010. A diverse Upper Jurassic dinosaur ichnofauna from central-west Portugal. Lethaia 43:245-257 [M. Carrano/M. Carrano]
81616 P. Mocho, R. Royo-Torres, E. Malafaia, F. Escaso, and F. Ortega. 2016. Systematic review of Late Jurassic sauropods from the Museu Geológico collections (Lisboa, Portugal). Journal of Iberian Geology 42(2):227-250 [M. Carrano/M. Carrano]