Sentence examples for morphological macroevolutionary trends from inspiring English sources

In the fossil record, the Ammonoidea (Cephalopoda, Mollusca) are well-known to display large-scale morphological macroevolutionary trends [ 27- 39].

Yet, during this early diversification phase, the history of ammonoids is characterized by a morphological macroevolutionary trend from straight-shelled ancestors (bactritoids; for a review of cephalopod phylogeny, see [ 65]) via loosely coiled earliest ammonoids toward completely tightly coiled forms with closed umbilicus.

These differences in the relative influence of phylogeny and of size on patterns of morphological integration are of potential importance to understanding macroevolutionary trends in morphological integration and differences in evolutionary patterns across large clades.

Finally, examining these patterns in light of phylogenetic history and other macroevolutionary trends may lead to important insights into the relationship between competition, morphology, ecology, and speciation in Plethodon.

Analysis of conserved noncoding regions reveals macroevolutionary trends in genome function.

In paleobiology, understanding genetic drift is essential for distinguishing active macroevolutionary trends driven by natural selection from passive trends driven by random processes (Raup et al., 1973; McShea, 1994).

Such effects may be enlightening regarding genetic/developmental networks that might be recruited in macroevolutionary trends, e.g. tabby mice whose dental formula is reminiscent of mouse ancestors suggest that the EDA (ectodysplasin) signaling pathway is involved in the evolution of tooth formula in rodents [ 12].

One may be tempted to defend the progressionist language by referring to a putative macroevolutionary trend towards increasing degrees of complexity.

Among the documented parallel morphological evolutionary trends, some can be explained as covarying traits, meaning that some morphological trends can result from constructional constraints [ 39, 162- 165].

Both ammonoid lineages display empirical morphological evolutionary trends of some shell characters.

However, such morphological evolutionary trends among ammonoids have been rarely discussed and quantified in detail [ 38, 39, 47, 55- 58].