Cookies Policy
X

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Clawed Lobster (Nephropidae) Diversity Through Time

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

This Article is currently unavailable for purchase.
Add to Favorites
You must be logged in to use this functionality

Cover image Placeholder

Abstract Clawed lobster diversity through time [Lower Cretaceous (Valanginian)–Recent] is compiled and interpreted herein. Species diversity trends are evaluated using raw numbers of species per geologic time unit (period, age) and also by using a variety of species-numbers normalization factors that address sampling biases. Species numbers are normalized for: 1) duration of time intervals (periods), 2) sedimentary rock exposure area per time intervals (periods), and 3) area under the Vail et al. (1978) sea-level curve (ages). The Vail curve method, new herein, normalizes for marginal/epicontinental sea coverage per age. By any measure; i.e., raw or normalized data, and over any time interval considered, shallow-dwelling (shelf depth) lobsters were significantly more diverse in the Cretaceous than in the Tertiary (e.g., 53 Cretaceous species vs. 16 Tertiary species, raw count; 18 Tertiary species if normalized for duration). Reduction in Tertiary lobster diversity seems due, in part, to mass extinction at the K/T boundary. However, lobster diversity rebounds in the Eocene, and it seems apparent that lower diversity of Tertiary lobsters is due more to post-Paleocene events than to K/T boundary events. The reduction in Tertiary fossil diversity seems largely explained by the lobsters' general abandonment of shelf depths in the Tertiary (ca. late Eocene–early Oligocene). Deep-dwelling lobsters are seldom collected as fossils, and their diversity history will never be known, but it seems clear that shelf-dwelling lobsters were significantly more diverse in the Cretaceous.

Affiliations: 1: Department of Geosciences, Edinboro University of Pennsylvania, Edinboro, Pennsylvania 16444, U.S.A. ( dtshudy@edinboro.edu)

10.1163/20021975-99990325
/content/journals/10.1163/20021975-99990325
dcterms_title,pub_keyword,dcterms_description,pub_author
10
5
Loading
Loading

Full text loading...

/content/journals/10.1163/20021975-99990325
Loading

Data & Media loading...

http://brill.metastore.ingenta.com/content/journals/10.1163/20021975-99990325
Loading

Article metrics loading...

/content/journals/10.1163/20021975-99990325
2017-08-24

Sign-in

Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation