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Taxonomic ranks shown on mouse-hover may differ from the taxonomic alignment in the publication. Because of the multiple appearances of genera in different taxonomic kingdoms (e.g. Siphonia is a genus in Protozoa→Granuloreticulosea and Animalia→Demospongea) you should verify the taxon (its rank) with the publications description or the link to the Paleobiology Database. Additionally, due to the lack of data at the source "Catalog of Life" perhaps no further data for an extinct taxon is provided here at all.
Check also "Sources" for further possibilities to download the data (image-quality may differ depending on the source).
- PDF: "Kennedy, Wright & Hancock, 1980. Collignoniceratid ammonites from the mid-Turonian of England and northern France"
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