deciphering the preservation of fossil insects: a case study from the crato member, early cretaceous of brazil

Clicks: 325
ID: 146628
2016
Free PDF
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This article has not been analysed, so there is no overall score — reader engagement is measured and shown alongside.
AI Quality Assessment
Not analyzed
Readership in this journal
Steady

Ranked #139 of 581 articles by views in pediatrics

Most read Least read

Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 581 in total.

Mint this article as an NFT
Not yet minted

Create a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.

5 SUSD one-off · no wallet required
Sign in to mint
Abstract
Exceptionally well-preserved three-dimensional insects with fine details and even labile tissues are ubiquitous in the Crato Member Konservat Lagerstätte (northeastern Brazil). Here we investigate the preservational pathways which yielded such specimens. We employed high resolution techniques (EDXRF, SR-SXS, SEM, EDS, micro Raman, and PIXE) to understand their fossilisation on mineralogical and geochemical grounds. Pseudomorphs of framboidal pyrite, the dominant fossil microfabric, display size variation when comparing cuticle with inner areas or soft tissues, which we interpret as the result of the balance between ion diffusion rates and nucleation rates of pyrite through the originally decaying carcasses. Furthermore, the mineral fabrics are associated with structures that can be the remains of extracellular polymeric substances (EPS). Geochemical data also point to a concentration of Fe, Zn, and Cu in the fossils in comparison to the embedding rock. Therefore, we consider that biofilms of sulphate reducing bacteria (SRB) had a central role in insect decay and mineralisation. Therefore, we shed light on exceptional preservation of fossils by pyritisation in a Cretaceous limestone lacustrine palaeoenvironment.
Reference Key
oss2016peerjdeciphering Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Gabriel Ladeira Osés;Setembrino Petri;Bruno Becker-Kerber;Guilherme Raffaeli Romero;Marcia de Almeida Rizzutto;Fabio Rodrigues;Douglas Galante;Tiago Fiorini da Silva;Jessica F. Curado;Elidiane Cipriano Rangel;Rafael Parra Ribeiro;Mírian Liza Alves Forancelli Pacheco
Journal pediatrics
Year 2016
DOI
10.7717/peerj.2756
URL
https://peerj.com/articles/2756/
Keywords
taphonomy araripe basin exceptional preservationmedicine

Citations

No citations found. To add a citation, contact the admin at info@scimatic.org

Comments

No comments yet. Be the first to comment on this article.