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Overview

Brief Summary

Fossil species

recent & fossil

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Distribution

Many pterobranch species have been found in Antarctic regions and colder waters, but they have also been found in warmer waters at lower latitudes.
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Physical Description

Morphology

Sexual Dimorphism

Generally no Sexual Dimorphism; females sometimes larger than males; one species shows Sexual Dimorphism in color and number of arms.
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Source: Fairbairn, 2013

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Evolution and Systematics

Evolution

Classification

When originally discovered in the 1800s, many pterobranchs were initially classified as bryozoans or other organisms.
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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