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Pteraspidomorphi

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Journal Article
Published: 09 November 2015
Journal of Paleontology (2015) 89 (4): 637–644.
... graptolite Zone. The measurements of the shield of T . mielnikensis n. sp. from Mielnik follow those used by Denison ( 1964 ). Class Pteraspidomorphi Goodrich, 1909 Subclass Heterostraci Lankester, 1868 Order Cyathaspidiformes Berg, 1937 Family Tolypelepididae Denison...
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Journal Article
Published: 01 January 2000
Journal of Paleontology (2000) 74 (1): 123–132.
... representatives of the Drepanaspida (Pteraspidomorphi, Heterostraci) . Arkiv för Zoologi , 12 : 515 - 535 . Poole , F. G. , C. A. Sandberg , and A. J. Boucot . 1977 . Silurian and Devonian paleogeography of the western United States ,. p. 39 - 65 J. H. Stewart , C. H. Stevens...
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Series: Geological Society, London, Memoirs
Published: 01 January 2013
DOI: 10.1144/M38.28
EISBN: 9781862396425
... with discoveries in Canada, Australia, South America, Oman and Russia, are the first well-documented vertebrate fossils with an ossified exoskeleton. They are represented, amongst others, by (1) jawless taxa such as Pteraspidomorphi – arandaspids ( Arandaspis and Sacabambaspis ), which occur in Bolivia...
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