Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Convergent Evolution01:54

Convergent Evolution

29.9K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
29.9K
Speciation Rates01:07

Speciation Rates

21.9K
Overview
21.9K
Limits to Natural Selection01:38

Limits to Natural Selection

33.0K
Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.
33.0K
Synteny and Evolution02:31

Synteny and Evolution

3.4K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.4K
The Evidence for Evolution02:55

The Evidence for Evolution

45.4K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
45.4K
What is Evolutionary History?02:35

What is Evolutionary History?

41.0K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
41.0K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

<i>Cryptovaranoides</i> is not a squamate.

eLife·2025
Same author

Rapid evolution and cranial morphospace expansion during the terrestrial to marine transition in elapid snakes.

Evolution; international journal of organic evolution·2025
Same author

The specialized inner ear labyrinth of worm-lizards (Amphisbaenia: Squamata).

PloS one·2024
Same author

A Late Devonian coelacanth reconfigures actinistian phylogeny, disparity, and evolutionary dynamics.

Nature communications·2024
Same author

The affinities of the Late Triassic <i>Cryptovaranoides</i> and the age of crown squamates.

Royal Society open science·2023
Same author

A giant armoured skink from Australia expands lizard morphospace and the scope of the Pleistocene extinctions.

Proceedings. Biological sciences·2023
Same journal

Hunting ecology predicts eye arrangements in the modular visual system of spiders.

Current biology : CB·2026
Same journal

Sub-second fluctuations between top-down and bottom-up modes distinguish diverse human brain states.

Current biology : CB·2026
Same journal

Queen bees offload pesticide burden to eggs when social buffering is overwhelmed.

Current biology : CB·2026
Same journal

Pitch selectivity in ferret auditory cortex.

Current biology : CB·2026
Same journal

A cell size-dependent competition between geometry and polarity governs nuclear and spindle positioning in early embryos.

Current biology : CB·2026
Same journal

Trophic cascades drive sustainability in the agricultural heritage rice-fish coculture system.

Current biology : CB·2026
See all related articles

Related Experiment Video

Updated: Oct 29, 2025

In Situ Hybridization Techniques for Paraffin-Embedded Adult Coral Samples
07:24

In Situ Hybridization Techniques for Paraffin-Embedded Adult Coral Samples

Published on: August 31, 2018

7.2K

Evolution: Morphological saturation and release in mammals.

Michael S Y Lee1, Alessandro Palci1

  • 1College of Science and Engineering, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia; Earth Sciences Section, South Australian Museum, North Terrace, Adelaide, SA 5000, Australia.

Current Biology : CB
|July 14, 2021
PubMed
Summary
This summary is machine-generated.

Mammal evolution faced dinosaur constraints. Post-dinosaur extinction, placental mammals remained limited for millions of years, possibly by competition with archaic mammals.

More Related Videos

Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum
04:32

Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum

Published on: March 19, 2017

7.7K
Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face
08:15

Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face

Published on: January 7, 2019

7.1K

Related Experiment Videos

Last Updated: Oct 29, 2025

In Situ Hybridization Techniques for Paraffin-Embedded Adult Coral Samples
07:24

In Situ Hybridization Techniques for Paraffin-Embedded Adult Coral Samples

Published on: August 31, 2018

7.2K
Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum
04:32

Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum

Published on: March 19, 2017

7.7K
Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face
08:15

Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face

Published on: January 7, 2019

7.1K

Area of Science:

  • Paleontology
  • Evolutionary Biology
  • Mammalian Evolution

Background:

  • Mammalian evolution during the Mesozoic Era was significantly influenced by dinosaur dominance.
  • Pre-existing theories suggested that the extinction of non-avian dinosaurs opened ecological niches for mammals.

Purpose of the Study:

  • To investigate the evolutionary trajectory of placental mammals following the Cretaceous-Paleogene extinction event.
  • To determine if the post-dinosaur era immediately facilitated rapid mammalian diversification or if other factors imposed constraints.

Main Methods:

  • Analysis of fossil records and paleontological data.
  • Comparative evolutionary studies of mammalian lineages.

Main Results:

  • Placental mammals experienced prolonged evolutionary constraints for several million years after the demise of non-avian dinosaurs.
  • Evidence suggests that competition with archaic mammal groups may have hindered the diversification of placental mammals.

Conclusions:

  • The extinction of non-avian dinosaurs did not result in immediate, explosive diversification for placental mammals.
  • Archaic mammal competitors played a significant role in shaping mammalian evolution in the early Cenozoic Era.