Also known as Irritator type site

Where: Ceará, Brazil (7.2° S, 39.3° W: paleocoordinates 8.7° S, 7.6° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Romualdo Formation (Santana Group), Late/Upper Aptian (122.5 - 113.0 Ma)

• From Melo et al. 2020: In summary, this integrated study of foraminifera, ostracodes and other microfossil data from the Romualdo Formation indicates that the local Alagoas Stage (Ostracoda Zone RT-011) can now be constrained to the Aptian. Arai and Assine 2020 also support that the Romualdo Formation is entirely Aptian in age.

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; mudstone and concretionary limestone

Size classes: macrofossils, microfossils

Collection methods: mechanical,

Primary reference: D. M. Martill, A. R. I. Cruickshank, E. Frey, P. G. Small, and M. Clarke. 1996. A new crested maniraptoran dinosaur from the Santana Formation (Lower Cretaceous) of Brazil. Journal of the Geological Society, London 153:5-8 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28052: authorized by Matthew Carrano, entered by Matthew Carrano on 22.01.2003

Creative Commons license: CC BY (attribution)