English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A new  Paralia  Heiberg species,  Paralia flatoniana  sp. nov., is documented from a late Eocene diatomite and mudstone deposit in east central Texas.  Paralia  represents up to 63% of the assemblage in the diatomite samples and 34% in the mudstone. Numerous  Paralia  initial valves are present adding an unusual component to this assemblage as they are infrequently reported from samples containing populations of fossil  Paralia . A third valve type observed attached to  Paralia  chains is also illustrated and discussed. Intact chains are common and preservation of the frustules is very good with limited indication of dissolution or transport. An average valve diameter of 19.0 µm (7.1–37.7 µm range), the presence of numerous initial valves and preservation of fine morphological structures suggest an environment with often high  in situ  productivity rather than a transported assemblage. Morphologically similar species  Paralia crenulata  and  Paralia thybergii  share many mantle characteristics with  P. flatoniana  while the valve face details of  Paralia fausta  are similar. Paleogeography and – ecology of the Eocene Gulf of Mexico and volcanism to the west provided a temperate coastal nutrient-rich shelf environment favourable for  Paralia .

Paralia flatoniana sp. nov., a new species from the late Eocene of Texas with discussion on ecology and initial valves