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

Derivatives: Problem Solving01:26

Derivatives: Problem Solving

Temperature-Dependent Growth of Brook TroutThe growth of brook trout is closely influenced by water temperature. Experimental data demonstrate how trout weight changes over a 24-day period in response to varying water temperatures. At lower temperatures, such as 15.5 degrees Celsius, brook trout show significant weight gain. However, as the temperature increases, the amount of weight gained steadily decreases. At the highest temperature measured, 24.4 degrees Celsius, trout experience a net...
Speciation Rates01:07

Speciation Rates

Overview

You might also read

Related Articles

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

Sort by
Same author

Cephalopod body size and macroecology through deep time.

Scientific reports·2025
Same author

Morphological complexity promotes origination and extinction rates in ammonoids.

Current biology : CB·2024
Same author

Ontogeny of highly variable ceratitid ammonoids from the Anisian (Middle Triassic).

PeerJ·2021
Same author

Suppressed competitive exclusion enabled the proliferation of Permian/Triassic boundary microbialites.

The depositional record : a journal of biological, physical and geochemical sedimentary processes·2020
Same author

Spatial distribution of oncocerid cephalopods on a Middle Devonian bedding plane suggests semelparous life cycle.

Scientific reports·2020
Same author

Eutrophication, microbial-sulfate reduction and mass extinctions.

Communicative & integrative biology·2016

Related Experiment Video

Updated: May 17, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

Quantification of ontogenetic allometry in ammonoids.

Dieter Korn1

  • 1Museum für Naturkunde, Leibniz Institute for Research on Evolution and Biodiversity, Berlin. dieter.korn@mfn-berlin.de

Evolution & Development
|November 9, 2012
PubMed
Summary

This study quantifies ammonoid ontogenetic change using computer simulations and real specimens. It proposes a method to classify conch ontogeny and measure allometry, revealing diverse growth patterns in ammonoids.

More Related Videos

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila
06:00

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila

Published on: October 1, 2011

Real Time and Repeated Measurement of Skeletal Muscle Growth in Individual Live Zebrafish Subjected to Altered Electrical Activity
11:41

Real Time and Repeated Measurement of Skeletal Muscle Growth in Individual Live Zebrafish Subjected to Altered Electrical Activity

Published on: June 16, 2022

Related Experiment Videos

Last Updated: May 17, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
07:41

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila
06:00

Experimental Manipulation of Body Size to Estimate Morphological Scaling Relationships in Drosophila

Published on: October 1, 2011

Real Time and Repeated Measurement of Skeletal Muscle Growth in Individual Live Zebrafish Subjected to Altered Electrical Activity
11:41

Real Time and Repeated Measurement of Skeletal Muscle Growth in Individual Live Zebrafish Subjected to Altered Electrical Activity

Published on: June 16, 2022

Area of Science:

  • Paleontology
  • Developmental Biology
  • Geometric Morphometrics

Background:

  • Ammonoids are crucial for evolutionary studies, but their ontogenetic changes lack quantitative analysis.
  • Planispirally coiled ammonoid shells offer unique longitudinal data for studying growth trajectories within single specimens.
  • This makes ammonoids an excellent model for understanding geometric changes in other shelled organisms.

Purpose of the Study:

  • To develop a quantitative method for analyzing ammonoid ontogenetic allometry.
  • To classify conch ontogeny and measure the degree of allometric growth in ammonoids.
  • To compare simulated and real ammonoid growth patterns.

Main Methods:

  • Computer simulations modeling artificial conchs based on modifications of three cardinal dimensions.
  • Analysis of ontogenetic allometry trajectories within a theoretical morphospace.
  • High-precision cross-sectioning of real ammonoid specimens for empirical data collection.

Main Results:

  • A novel method for classifying ammonoid conch ontogeny and quantifying allometry is proposed.
  • Simulated and real ammonoid growth patterns exhibit a wide spectrum of allometric variation.
  • Observed allometry ranges from near isometry to complex monophasic, biphasic, and polyphasic patterns.

Conclusions:

  • Ammonoid ontogeny displays significant geometric diversity, challenging previous assumptions of uniform growth.
  • The proposed quantitative framework allows for detailed comparison of ontogenetic trajectories across different ammonoid taxa.
  • This research provides a foundation for future studies on the evolution of shell geometry and developmental patterns in fossil invertebrates.