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Related Experiment Video

Updated: Feb 3, 2026

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
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Tooth replacement in the bowfin (Amia calva - Holostei).

William A Miller1, Carolyn J P Radnor1

  • 1Department of Oral Biology, State University of New York, 4510 Main Street, Buffalo, New York 14226.

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|October 24, 2018
PubMed
Summary

Amia calva tooth replacement patterns are irregular, not following the typical 1:1 series. This study suggests tooth development is guided by a morphogenic field, not the Zahnreihen concept.

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Area of Science:

  • Ichthyology
  • Developmental Biology
  • Comparative Anatomy

Background:

  • Tooth replacement patterns in fishes provide insights into developmental processes.
  • The Zahnreihen concept describes regular tooth replacement series.
  • Amia calva (bowfin) is a basal ray-finned fish with a significant fossil record.

Purpose of the Study:

  • To investigate tooth replacement patterns in Amia calva.
  • To evaluate the applicability of the Zahnreihen concept to Amia calva dentition.
  • To explore alternative models for tooth development in Amia calva.

Main Methods:

  • Radiographic examination of 20 Amia calva specimens (ages 3-10 seasons).
  • Alizarin red S staining and clearing techniques for detailed bone and tooth analysis.
  • Detailed observation and documentation of tooth positions and replacement sequences.

Main Results:

  • Alternate (1:1) tooth replacement was observed but not universal.
  • Irregular tooth replacement patterns were frequently recorded.
  • Specific patterns (e.g., 2:1, 3:1, 2:2) were identified in bones like the maxilla.

Conclusions:

  • The observed tooth replacement data do not support the Zahnreihen concept.
  • Findings are consistent with a morphogenic field concept of tooth development in Amia calva.
  • Amia calva exhibits complex and variable tooth replacement strategies.