Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5364
pubmed:dateCreated
1998-5-18
pubmed:abstractText
Body mass estimates for 1534 North American fossil mammal species show that new species are on average 9.1% larger than older species in the same genera. This within-lineage effect is not a sampling bias. It persists throughout the Cenozoic, accounting for the gradual overall increase in average mass (Cope's rule). The effect is stronger for larger mammals, being near zero for small mammals. This variation partially explains the unwavering lower size limit and the gradually expanding mid-sized gap, but not the sudden large increase in the upper size limit, at the Cretaceous-Tertiary boundary.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0036-8075
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
280
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
731-4
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Cope's rule and the dynamics of body mass evolution in North American fossil mammals.
pubmed:affiliation
Department of Paleobiology, Smithsonian Institution, MRC 121, Washington, DC 20560, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.