Digital Treatise is an online, subscription-based service that allows users to access the complete content of every previously published volume of the Treatise on Invertebrate Paleontology.

Offered as an annual subscription to libraries and universities, a subscription to Digital Treatise grants access to searchable PDF files of all 53 published volumes of the Treatise on Invertebrate Paleontology. Volumes can be downloaded in their entirety or as individual chapters.

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Part E, Porifera (Revised), vol. 4 & 5 (2015)
Porifera
Published: 2015-01-01

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