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Archaeopteris hibernica

RMID:DTF4G8

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Contributor:

The Natural History Museum / Alamy Stock Photo

Image ID:

DTF4G8

File size:

32.5 MB (2.3 MB Compressed download)

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Dimensions:

2840 x 4000 px | 24 x 33.9 cm | 9.5 x 13.3 inches | 300dpi

Photographer:

Natural History Museum, London

More information:

This image could have imperfections as it’s either historical or reportage.

Fossil frond of the extinct progymnosperm from Kiltorkan, Kilkenny, Ireland dating from the Upper Devonian. Specimen held at the Natural History Museum, London.

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RMPFA5T2–. Devonian floras; a study of the origin of Cormophyta. Paleobotany -- Devonian. VI] PTEROPSIDA 81. Several attempts have been recently made to determine whether Archaeopteris was a member of the Primofilices or a Pteridosperm, Kidston^ and others think the latter the more probable. We, however, agree with Johnson^ that there is absolutely no evidence that this very completely known type (at any rate in the case of A. hibernica) bore seeds. It is much more probably a Primofilix. The evidence of Rhacopteris, so far as it goes, agrees with this conclusion. On the other hand at least one Adiantit

RMRCTB2Y–. Devonian floras; a study of the origin of Cormophyta. Paleobotany -- Devonian. VI] PTEROPSIDA 81. Several attempts have been recently made to determine whether Archaeopteris was a member of the Primofilices or a Pteridosperm, Kidston^ and others think the latter the more probable. We, however, agree with Johnson^ that there is absolutely no evidence that this very completely known type (at any rate in the case of A. hibernica) bore seeds. It is much more probably a Primofilix. The evidence of Rhacopteris, so far as it goes, agrees with this conclusion. On the other hand at least one Adiantit

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Archaeopteris hibernica

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