Polymorphic organization in a planktonic graptoloid (Hemichordata, Pterobranchia) colony of Late Ordovician age
Zalasiewicz, Jan A, Page, Alex, Rickards, R. Barrie, Williams, Mark, Wilby, Philip R, Howe, Michael P. A, Snelling, Andrea M
Published in Geological magazine (01.01.2013)
Published in Geological magazine (01.01.2013)
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Psigraptus jacksoni Rickards & Stait - systematics, reconstruction, distribution and preservation
Rickards, Barrie R., Partridge, Penelope L., Banks, Maxwell R.
Published in Alcheringa (Sydney) (01.01.1991)
Published in Alcheringa (Sydney) (01.01.1991)
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appearance of Baragwanathia (Lycophytina) in the Silurian
Garratt, M.J, Tims, J.D, Rickards, R.B, Chambers, T.C, Douglas, J.G
Published in Botanical journal of the Linnean Society (01.12.1984)
Published in Botanical journal of the Linnean Society (01.12.1984)
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