Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

1 results

  • The first 2 million years after the Cretaceous-Tertiary boundary in east Texas: rate and paleoecology of the molluscan recovery

  • Thor A. Hansen, Benjamin R. Farrell, Banks Upshaw III
  • Journal:
    Paleobiology / Volume 19 / Issue 2 / Spring 1993
    Published online by Cambridge University Press:
    08 February 2016, pp. 251-265

  • Analysis of molluscan collections from a 3+ m.y. interval around the Cretaceous–Tertiary (K–T) interval in east Texas suggests that molluscs suffered an extinction at or near the K–T boundary, followed by a prolonged period of stress which lasted through the P0 and P1a planktic foraminiferal zones. The stressed period was characterized by low species richness, low abundances of individuals, high species turnover and a dominance of deposit feeders. Species richness and the relative abundance of deposit feeders generally track the 13C depletion curve suggesting that the stress was caused by a lack of primary production. A stable, relatively diverse, suspension feeding molluscan community was reestablished less than two million years after the K–T boundary. The total number of species within the habitat did not recover to Cretaceous levels within the study interval.