Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Sibert, Elizabeth C; Norris, Richard D (2015): Ichthyolith (tooth and denticle) counts from DSDP 386, 596, ODP 886, 1262, IODP U1403, and Gubbio K/Pg boundary sections [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.846789, Supplement to: Sibert, EC; Norris, RD (2015): New Age of Fishes initiated by the Cretaceous-Paleogene mass extinction. Proceedings of the National Academy of Sciences, 112(28), 8537-8542, https://doi.org/10.1073/pnas.1504985112

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Ray-finned fishes (Actinopterygii) comprise nearly half of all modern vertebrate diversity, and are an ecologically and numerically dominant megafauna in most aquatic environments. Crown teleost fishes diversified relatively recently, during the Late Cretaceous and early Paleogene, although the exact timing and cause of their radiation and rise to ecological dominance is poorly constrained. Here we use microfossil teeth and shark dermal scales (ichthyoliths) preserved in deep-sea sediments to study the changes in pelagic fish community in the latest Cretaceous and early Paleogene. We find that the Cretaceous-Paleogene (K/Pg) extinction event marked a profound change in the structure of ichthyolith communities around the globe: While shark denticles outnumber ray-finned fish teeth in Cretaceous deep-sea sediments around the world, there is a dramatic increase in the proportion of ray-finned fish teeth to shark denticles in the Paleocene. There is also an increase in size and numerical abundance of ray-finned fish teeth at the boundary. These changes are sustained through at least the first 24 million years of the Cenozoic. This new fish community structure was initiated at the K/Pg mass extinction, suggesting the extinction event played an important role in initiating the modern "age of fishes."
Project(s):
Deep Sea Drilling Project (DSDP)
Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 18.023449 * Median Longitude: -72.631618 * South-bound Latitude: -27.185830 * West-bound Longitude: -168.240000 * North-bound Latitude: 44.689700 * East-bound Longitude: 12.580000
Date/Time Start: 1975-07-24T00:00:00 * Date/Time End: 2003-03-27T21:25:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Sibert, EC; Norris, RD (2015): Ichthyolith (tooth and denticle) counts from DSDP Hole 43-386. https://doi.org/10.1594/PANGAEA.846778
  2. Sibert, EC; Norris, RD (2015): Ichthyolith (tooth and denticle) counts from DSDP Hole 91-596. https://doi.org/10.1594/PANGAEA.846780
  3. Sibert, EC; Norris, RD (2015): Ichthyolith (tooth and denticle) counts from ODP Hole 145-886C. https://doi.org/10.1594/PANGAEA.846781
  4. Sibert, EC; Norris, RD (2015): Ichthyolith (tooth and denticle) counts from ODP Hole 208-1262B. https://doi.org/10.1594/PANGAEA.846782
  5. Sibert, EC; Norris, RD (2015): Ichthyolith (tooth and denticle) counts from IODP Site 342-U1403A. https://doi.org/10.1594/PANGAEA.846784
  6. Sibert, EC; Norris, RD (2015): Ichthyolith (tooth and denticle) counts from sediment core Gubbio. https://doi.org/10.1594/PANGAEA.846786