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June 17, 2026PeerJOpen Access

Acrothoracican bioerosion as evidence of Early Cretaceous barnacles (Cirripedia) in northwestern Gondwana

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Authors

ECEdwin‐Alberto Cadena

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Overview

Uncovers barnacle ichnofossils in Early Cretaceous ecosystems, highlighting ancient ecological interactions.

Key Points

  • This research aims to document the presence of barnacles in Early Cretaceous marine environments of northwestern Gondwana.
  • Described ichnofossils preserved on a gryphaeid shell from the Rosa Blanca Formation, Colombia.
  • Identified borings attributed to barnacle sclerobionts, representing the earliest evidence of their existence in the region.
  • Conducted detailed ichnological analyses to interpret the ecological implications of these findings.
  • First record of barnacle borings (n=132) from the Early Cretaceous, identified as cf. Rogerella.
  • Borings exhibit a distinct inverted pyramidal chamber structure, indicating specific feeding strategies.
  • Findings enhance understanding of ancient benthic interactions and the diversity of marine life during this period.

Cite This Study

Edwin‐Alberto Cadena (2026) studied this question.

synapsesocial.com/papers/6a323b4cd50b63ecad205ebbhttps://doi.org/10.7717/peerj.21433
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