Acritax - Acritax_JWIP - Prototrachysphaeridium Acritax - Acritax_JWIP - Prototrachysphaeridium

CATALOG - Prototrachysphaeridium

Folder trail: Acritax_JWIP -> P -> Prototrachysphaeridium
Folders this level: << < Proteus, Protoarchaeosacculina, Protoarenicola, Protobella, Protocridosphaeridium, Protolagena, Protoleiosphaeridium, Protolophosphaeridium, Protomassulina, Protomycterosphaeridium, Protonucellosphaeridium, Protoocridosphaeridium, Protopharetra, Protosphaeridium, Prototracheites, Prototrachysphaeridium, Prototrematosphaeridium, Protovavosphaeridium, Protozonosphaeridium, Psenotopus, Pseudoarenicola, Pseudobohaidina, Pseudodendron, Pseudodiacrodiacrodium, Pseudodiacrodium, Pseudodicrodiacrodium, Pseudodomasia, Pseudofavososphaera, Pseudofromea, Pseudolunulidia, Pseudomaranhites> >>

This catalog consists of scans of cards from the "John William Index of Palaeopalynology" compiled by John Williams between 1971 and 2010 - see also this page.
The cards inclued here are only those for the acritarchs, they are sorted alphabetically for simple browsing. You can also use search boxes at the top & bottom of the page to find specific taxa
There are PDF (higher quality) and jpeg (faster opening) copies of the cards, the content of them is identical

Prototrachysphaeridium incrassatum

Prototrachysphaeridium minutum

Prototrachysphaeridium nevelense

Prototrachysphaeridium obsoletum

Prototrachysphaeridium samsonvielui

Prototrachysphaeridium speciosum

Prototrachysphaeridium staplinii

Prototrachysphaeridium vavosum

Current identification:

taxonomic rank: Genus


Acritax - Acritax_JWIP - Prototrachysphaeridium compiled by John Williams and Brian Pedder

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Short stable page link: Go to to create a permanent copy of this page - citation notes
Possible link to Algaebase for nomenclatural details: Prototrachysphaeridium

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