Astraspida

id: astraspida-206-17122216
title: Astraspida
text: Astraspida, or astraspids, are a small group of extinct armored jawless vertebrates, which lived in the Late Ordovician in North America. They are placed among the Pteraspidomorphi because of the large dorsal and ventral shield of their head armor. They are represented by a single genus, Astraspis, including possibly two species, A. desiderata and A. splendens but their remains are fairly abundant in Ordovician sandstones of the USA and Canada (Quebec). The head armor of Astraspis is rather mass
brand slug: wiki
category slug: encyclopedia
description: Extinct order of jawless fishes
original url: https://en.wikipedia.org/wiki/Astraspida
date created: 2005-07-27T11:23:57Z
date modified: 2024-09-10T21:58:01Z
main entity: {"identifier":"Q14524396","url":"https://www.wikidata.org/entity/Q14524396"}
image: {"content_url":"https://upload.wikimedia.org/wikipedia/commons/7/7d/Astraspis_desiderata.png","width":354,"height":250}
fields total: 13
integrity: 16

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