scholarly journals Morphological Disparity: An Attempt to Widen and to Formalize the Concept

10.5772/25332 ◽  
2011 ◽  
Author(s):  
Igor Ya.
Keyword(s):  
Morphological Disparity

scholarly journals Impact of transition to a subterranean lifestyle on morphological disparity and integration in talpid moles (Mammalia, Talpidae)

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Gabriele Sansalone ◽  
Paolo Colangelo ◽  
Anna Loy ◽  
Pasquale Raia ◽  
Stephen Wroe ◽  
...  
Keyword(s):  
Evolutionary Biology ◽  
Morphological Variability ◽  
Phenotypic Integration ◽  
Phenotypic Traits ◽  
Phenotypic Evolution ◽  
Morphological Disparity ◽  
Morphological Diversification ◽  
Phylogenetic Conservatism ◽  
Selective Forces ◽  
Subterranean Species

Abstract Background Understanding the mechanisms promoting or constraining morphological diversification within clades is a central topic in evolutionary biology. Ecological transitions are of particular interest because of their influence upon the selective forces and factors involved in phenotypic evolution. Here we focused on the humerus and mandibles of talpid moles to test whether the transition to the subterranean lifestyle impacted morphological disparity and phenotypic traits covariation between these two structures. Results Our results indicate non-subterranean species occupy a significantly larger portion of the talpid moles morphospace. However, there is no difference between subterranean and non-subterranean moles in terms of the strength and direction of phenotypic integration. Conclusions Our study shows that the transition to a subterranean lifestyle significantly reduced morphological variability in talpid moles. However, this reduced disparity was not accompanied by changes in the pattern of traits covariation between the humerus and the mandible, suggesting the presence of strong phylogenetic conservatism within this pattern.

A new odontocete (toothed cetacean) from the Early Miocene of Peru expands the morphological disparity of extinct heterodont dolphins

2017 ◽  
Vol 16 (12) ◽  
pp. 981-1016 ◽  
Author(s):  
Olivier Lambert ◽  
Christian de Muizon ◽  
Elisa Malinverno ◽  
Claudio Di Celma ◽  
Mario Urbina ◽  
...  
Keyword(s):  
Early Miocene ◽  
Morphological Disparity

scholarly journals Spatial filters of function and phylogeny determine morphological disparity with latitude

PLoS ONE ◽  
2019 ◽  
Vol 14 (8) ◽  
pp. e0221490 ◽  
Author(s):  
K. S. Collins ◽  
S. M. Edie ◽  
T. Gao ◽  
R. Bieler ◽  
D. Jablonski
Keyword(s):  
Spatial Filters ◽  
Morphological Disparity

scholarly journals The complex effects of mass extinctions on morphological disparity

Evolution ◽  
2020 ◽  
Vol 74 (10) ◽  
pp. 2207-2220
Author(s):  
Mark N. Puttick ◽  
Thomas Guillerme ◽  
Matthew A. Wills
Keyword(s):  
Mass Extinctions ◽  
Morphological Disparity

Preservation is predictable: quantifying the effect of taphonomic biases on ecological disparity in birds

Paleobiology ◽  
2015 ◽  
Vol 41 (2) ◽  
pp. 353-367 ◽  
Author(s):  
Jonathan S. Mitchell
Keyword(s):  
Sample Size ◽  
Environmental Conditions ◽  
Fossil Record ◽  
Large Scale ◽  
Morphological Disparity ◽  
Bird Assemblages ◽  
Lacustrine Deposits ◽  
Fossil Assemblages ◽  
Fossil Data ◽  
Relative Scarcity

AbstractEvolutionary inferences from fossil data often require accurately reconstructing differences in richness and morphological disparity between fossil sites across space and time. Biases such as sampling and rock availability are commonly accounted for in large-scale studies; however, preservation bias is usually dealt with only in smaller, more focused studies. Birds represent a diverse, but taphonomically fragile, group commonly used to infer environmental conditions in recent (Pleistocene and later) fossil assemblages, and their relative scarcity in the fossil record has led to controversy over the timing of their radiation. Here, I use simulations to show how even weak taphonomic biases can distort estimates of richness, and render variance sensitive to sample size. I then apply an ecology-based filtering model to recent bird assemblages to quantify the distortion induced by taphonomy. Certain deposit types, such as caves, show less evidence of taphonomic distortion than others, such as fluvial and lacustrine deposits. Archaeological middens unsurprisingly show some of the strongest evidence for taphonomic bias, and they should be avoided when reconstructing Pleistocene and early Holocene environments. Further, these results support previously suggested methods for detecting fossil assemblages that are relatively faithfully preserved (e.g., presence of difficult-to-preserve taxa), and I use these results to recommend that future large-scale studies include facies diversity along with metrics such as rock volume, or compare only sites with similar taphonomic histories.

scholarly journals Do cladistic and morphometric data capture common patterns of morphological disparity?

Palaeontology ◽  
2015 ◽  
Vol 58 (3) ◽  
pp. 393-399 ◽  
Author(s):  
Alexander J. Hetherington ◽  
Emma Sherratt ◽  
Marcello Ruta ◽  
Mark Wilkinson ◽  
Bradley Deline ◽  
...  
Keyword(s):  
Data Capture ◽  
Morphometric Data ◽  
Morphological Disparity

scholarly journals Diversity and morphological disparity of desmid assemblages in Central European peatlands

Hydrobiologia ◽  
2009 ◽  
Vol 630 (1) ◽  
pp. 243-256 ◽  
Author(s):  
Jiří Neustupa ◽  
Kateřina Černá ◽  
Jan Št’astný
Keyword(s):  
Morphological Disparity ◽  
Central European
Sign in / Sign up

Export Citation Format

Share Document