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

The Tree of Life - Bacteria, Archaea, Eukaryotes02:40

The Tree of Life - Bacteria, Archaea, Eukaryotes

41.7K
The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
41.7K
Diversity of Protists I01:15

Diversity of Protists I

2.2K
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
2.2K
Eukaryotic Evolution01:24

Eukaryotic Evolution

43.7K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
43.7K
Convergent Evolution01:54

Convergent Evolution

34.5K
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.
34.5K
What is Evolutionary History?02:35

What is Evolutionary History?

44.7K
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.
44.7K
The Fossil Record02:56

The Fossil Record

28.5K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
28.5K

You might also read

Related Articles

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

Sort by
Same author

Cohort profile: Sheyang Mini Birth Cohort Study (SMBCS).

BMJ open·2026
Same author

Cerebrovascular reactivity in migraine: a breath-hold BOLD fMRI study.

The journal of headache and pain·2026
Same author

Chronic Low-Dose Cadmium Exposure Impairs Adult Hippocampal Neurogenesis by Suppressing Noncanonical Wnt5a Signaling.

Journal of applied toxicology : JAT·2026
Same author

Pericentrosomal Redistribution of the Endoplasmic Reticulum Ensures Organelle Symmetric Inheritance and Mitotic Progression.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Functional anti-preS1 antibody responses associated with viral control in chronic hepatitis B.

Gut·2026
Same author

Zinc finger protein ZBTB7A suppresses hepatitis B virus replication by attenuating FXRα-mediated HBV transcription and lowering covalently closed circular DNA levels.

Antiviral research·2026

Related Experiment Video

Updated: Mar 31, 2026

Modeling Tuberculosis in Mycobacterium marinum Infected Adult Zebrafish
07:00

Modeling Tuberculosis in Mycobacterium marinum Infected Adult Zebrafish

Published on: October 8, 2018

11.4K

Largest known Mesozoic multituberculate from Eurasia and implications for multituberculate evolution and biology.

Li Xu1, Xingliao Zhang1, Hanyong Pu1

  • 1Henan Geological Museum, Zhengzhou, Henan 450016, China.

Scientific Reports
|October 23, 2015
PubMed
Summary

A new giant multituberculate mammal, Yubaartar zhongyuanensis, was discovered in China. This finding reveals unique dental features, evidence of bone healing, and suggests mammal faunal interchange before the Cretaceous-Paleogene extinction.

More Related Videos

Use of the Invertebrate Galleria mellonella as an Infection Model to Study the Mycobacterium tuberculosis Complex
09:23

Use of the Invertebrate Galleria mellonella as an Infection Model to Study the Mycobacterium tuberculosis Complex

Published on: June 30, 2019

12.7K
A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
10:23

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

Published on: July 11, 2025

752

Related Experiment Videos

Last Updated: Mar 31, 2026

Modeling Tuberculosis in Mycobacterium marinum Infected Adult Zebrafish
07:00

Modeling Tuberculosis in Mycobacterium marinum Infected Adult Zebrafish

Published on: October 8, 2018

11.4K
Use of the Invertebrate Galleria mellonella as an Infection Model to Study the Mycobacterium tuberculosis Complex
09:23

Use of the Invertebrate Galleria mellonella as an Infection Model to Study the Mycobacterium tuberculosis Complex

Published on: June 30, 2019

12.7K
A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles
10:23

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

Published on: July 11, 2025

752

Area of Science:

  • Paleontology
  • Vertebrate Zoology
  • Evolutionary Biology

Background:

  • Multituberculates were a successful group of Mesozoic mammals.
  • Understanding their diversity and distribution is key to reconstructing mammalian evolution.
  • Previous records of Late Cretaceous multituberculates were primarily from the Mongolian Plateau.

Purpose of the Study:

  • To describe a new genus and species of multituberculate mammal from China.
  • To investigate the phylogenetic relationships of this new taxon within multituberculates.
  • To explore implications for multituberculate biogeography and adaptive evolution.

Main Methods:

  • Description of a partial skeleton including cranium and dentition.
  • Phylogenetic analysis based on craniodental characters.
  • Paleopathological examination of skeletal remains.

Main Results:

  • Discovery of Yubaartar zhongyuanensis gen. and sp. nov., the largest known Mesozoic multituberculate from Eurasia.
  • Identification of the first evidence of ultimate upper premolar replacement in multituberculates.
  • Documentation of a unique paleopathological case of a healed tibia fracture in a Mesozoic mammal.
  • Phylogenetic placement of Yubaartar as the immediate outgroup to Taeniolabidoidea, indicating faunal interchange.

Conclusions:

  • Yubaartar zhongyuanensis expands the known diversity and geographic range of Late Cretaceous multituberculates.
  • The findings support increased dental and body size disparity in multituberculates leading up to the K-Pg transition.
  • Evidence suggests a significant adaptive shift towards herbivory and faunal interchange among multituberculates before the K-Pg boundary.