Laje do Coringa, Ilha do Cajual (Cretaceous to of Brazil)

Where: Maranhão, Brazil (2.5° S, 44.5° W: paleocoordinates 9.6° S, 18.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Alcântara Formation (Itapecuru Group), Late/Upper Albian to Late/Upper Albian (105.3 - 93.5 Ma)

• São Luís-Grajaú Basin; some reworking possible; Albian-Cenomanian age is based upon palynology

• group of beds-level stratigraphic resolution

Environment/lithology: estuary or bay; fine-grained, quartzose sandstone and conglomerate

• "sandstone and rhythmic sandstone/mudstone facies, intercalated with conglomerate levels"

Size classes: macrofossils, mesofossils

Collected in 1994-present

Collection methods: surface (float), surface (in situ), mechanical,

Primary reference: M. A. Medeiros and C. L. Schultz. 2002. A fauna dinossauriana da "Laje do Coringa", Cretáceo Médio do nordeste do Brasil [The dinosaurian fauna of "Laje do Coringa", middle Cretaceous of northeastern Brazil]. Arquivos do Museu Nacional, Rio de Janeiro 60(3):155-162 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 56365: authorized by Matthew Carrano, entered by Matthew Carrano on 17.11.2005, edited by Mark Uhen, Roger Benson, Jonathan Tennant, Richard Butler and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes -
Actinopteri
 Tetraodontiformes -
Atlanticopristis equatorialis n. gen. n. sp.14 Pereira and Medeiros 2008
 Lepisosteiformes -
Lepidotes sp. Agassiz 1843 gar
Coelacanthimorpha
 Coelacanthiformes - Coelacanthidae
Mawsonia sp. Mawson and Woodward 1907 coelacanth
BR29-32
Reptilia
 Saurischia -
Saurischia indet.2 Seeley 1888 saurischian
Sauropoda indet.12 Marsh 1878 sauropod
Sauropoda indet.2 Marsh 1878 sauropod
also "Astrodon?"
 Saurischia - Rebbachisauridae
Rebbachisauridae indet.12 sauropod
UFMA 1.10.168, 188, 806, 015, 283, 170, 306, 728, 983, 1040, 1530, 169, 1802, 951, 990, 1252, 198
 Saurischia -
Titanosauriformes indet.10 Salgado et al. 1997 sauropod
Titanosauria indet.8 Bonaparte and Coria 1993 sauropod
UFMA 1.10.1958, single osteoderm
 Avetheropoda - Carcharodontosauridae
Carcharodontosauridae indet.3 Stromer 1931 allosauroid
cf. Carcharodontosaurus sp.1 Stromer 1931 allosauroid
BR13, 14, 15
 Saurischia - Spinosauridae
Spinosauridae indet.11, Spinosauridae indet.4, Oxalaia quilombensis n. gen. n. sp.6, "Sigilmassasaurus sp." = Spinosaurus
Spinosauridae indet.11 Stromer 1915 tetanuran
tooth morphotype 2
Spinosauridae indet.4 Stromer 1915 tetanuran
Oxalaia quilombensis n. gen. n. sp.6 Kellner et al. 2011 tetanuran
tooth morphotype 1
"Sigilmassasaurus sp." = Spinosaurus Stromer 1915 tetanuran
 Saurischia - Noasauridae
Noasauridae indet.9 Bonaparte and Powell 1980 ceratosaur
UFMA 1.20.554 (a-i): nine isolated 'Masiakasaurus-like' teeth
 Pterosauria - Anhangueridae
Anhangueridae indet.5 pterosaur
UFMA 1.20.178-1, UFMA 1.20.166, UFMA 1.20.130, UFMA 1.20.1744, URC R.77-1, URC R.77-2, URC R.77-3, URC R.77-4, URC R.77-5, teeth (four morphotypes)
 Loricata -
Coringasuchus anisodontis n. gen. n. sp.7 Kellner et al. 2009 crocodilian
MN 7128-V
Crocodylia indet.13 crocodilian
BR24-26
 Squamata - Mosasauridae
? Mosasauridae indet.7 Gervais 1852 mosasaur
"should be regarded with caution"
 Sauropterygia -
? Plesiosauria indet.7 plesiosaur
"should be regarded with caution"
Osteichthyes
 Dipnotetrapodomorpha -
Ceratodontiformes indet.1 Berg 1940 Australian lungfish
BR27-28
 Ceratodontiformes - Neoceratodontidae
Neoceratodus africanus Haug 1905 Queensland lungfish
Pinopsida
 Pinales -
"Coniferales indet." = Pinales
"Coniferales indet." = Pinales Dumortier 1829
Equisetopsida
 Equisetales -
Equisetales indet. Dumortier 1829
Pteridopsida
 Osmundales - Osmundaceae
Osmundaceae indet. Berchtold and Presl