Species delimitation and coexistence in an ancient, depauperate vertebrate clade.

ABSTRACT:

Background

A major challenge to understanding how biodiversity has changed over time comes from depauperons, which are long-lived lineages with presently low species diversity. The most famous of these are the coelacanths. This clade of lobe-finned fishes occupies a pivotal position on the vertebrate tree between other fishes and tetrapods. Yet only two extant species and fewer than 100 extinct forms are known from the coelacanth fossil record, which spans over 400 million years of time. Although there is evidence for the existence of additional genetically isolated extant populations, a poor understanding of morphological disparity in this clade has made quantifying coelacanth species richness difficult.

Results

Here, we quantify variation in a sample of skulls and skeleton

SUBMITTER: Brownstein CD 

PROVIDER: S-EPMC9277872 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature