Osteocallis isp.

Cunha, Lucca S., Dentzien-Dias, Paula & Francischini, Heitor, 2024, New bioerosion traces in rhynchosaur bones from the Upper Triassic of Brazil and the oldest occurrence of the ichnogenera Osteocallis and Amphifaoichnus, Acta Palaeontologica Polonica 69 (1), pp. 1-21 : 10

publication ID	https://doi.org/ 10.4202/app.01093.2023
DOI	https://doi.org/10.5281/zenodo.10999096
persistent identifier	https://treatment.plazi.org/id/A253B73D-FFF4-4948-5A00-FBAFFEDAF94E
treatment provided by	Felipe
scientific name	Osteocallis isp.
status

Treatment

Osteocallis isp.

Fig. 4D View Fig .

Material.—UFRGS-PV-1581- T #11 ( Fig. 4D View Fig ), a bone fragment referred to Hyperodapedon mariensis from Buriol Site, São João do Polêsine municipality, Rio Grande do Sul State, Brazil; Base of the Candelária Sequence (vertebrate remains associated to the lower subunit of the Hyperodapedon AZ ), SMS, Paraná Basin; middle Carnian (lower Upper Triassic).

Description.—A trail formed by successive straight and arcuate, mainly non-paired grooves bored on the surface of the bone. Trail length is 3.29 mm and the width ranges from 0.25–1.48 mm.

Remarks.—The preservation of the trail prevents its ichnospecific classification, because it is not possible to ensure that the grooves are mainly arcuate and paired. The grooves do not appear to be organized in parallel rows and regularly spaced as seen in Osteocallis leonardii . The trail is closely associated with an irregular cluster of randomly oriented grooves ( Fig. 4D View Fig ).