Fort Mont Serrat (Cretaceous to of Brazil)

Also known as Fort Montserrate

Where: Bahia, Brazil (12.9° S, 38.5° W: paleocoordinates 11.6° S, 5.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Ilhas Group, Late/Upper Hauterivian to Late/Upper Hauterivian (136.4 - 125.5 Ma)

• Lower Cretaceous Recôncavo Basin, Bahia Supergroup, Ilhas Group (Late Hauterivian–Early Barremian)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithified, pebbly conglomerate and green, sandy shale

• "the cliff...consists chiefly of conglomerate, with irregular wedge-shaped bands of shale and clay, and also bands of sandstone. The conglomerate is composed of more or less rounded pebbles of gneiss, granite, quartz, and other crystalline rocks, and occasionally of sandstone; the whole forming an extremely hard rock. The pebbles vary in size from the finest gravel to large boulders."

Size classes: macrofossils, mesofossils

Collected by S. Allport in 1859

Primary reference: S. Allport. 1860. On the discovery of some fossil remains near Bahia in South America. Quarterly Journal of the Geological Society of London 16:263-268 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 51911: authorized by Matthew Carrano, entered by Matthew Carrano on 01.07.2005, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Podocopida - Candonidae
Candona candida Müller 1776 ostracod
 Podocopida - Cyprididae
? Cypris conculcata n. sp. ostracod
small
? Cypris montserratensis n. sp. ostracod
? Cypris allportiana n. sp. ostracod
? Cypris sp. Müller 1776 ostracod
Bivalvia
 Unionida - Unionidae
Unio sp. Philipsson 1788 freshwater mussel
Gastropoda
 Architaenioglossa - Viviparidae
Paludina sp. Férussac 1812 snail
large
 Sorbeoconcha - Thiaridae
"Melania terebriformis n. sp." = Thiara
"Melania terebriformis n. sp." = Thiara snail
 Neritoidea - Neritidae
Neritina sp. Lamarck 1816 snail
Actinopteri
 Lepisosteiformes -
Lepidotes sp. Agassiz 1843 gar
Reptilia
 Loricata -
Thoracosaurus bahiensis2 Marsh 1869 crocodilian
Teeth
Crocodylia indet.1 crocodilian
"Crocodilus hartti" = Sarcosuchus hartti2 Marsh 1869 crocodilian