Where: Ceará, Brazil (7.2° S, 39.7° W: paleocoordinates 8.7° S, 8.1° W)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

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

• Presence of concretions suggests the Romualdo Member

•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: lacustrine - large; lithified limestone

Size class: microfossils

• One specimen of Axelrodichthys measuring 70mm in total length

Preservation: replaced with phosphate

Reposited in the BMNH

Primary reference: R. H. Bate. 1972. Phosphatized ostracods with appendages from the Lower Cretaceous of Brazil. Palaeontology 15:379-393 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 140951: authorized by Mark Bell, entered by Mark Bell on 19.03.2013, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)