Amphorispermum an enigmatic assemblage

Tom M. Harris

doi:10.54991/jop.1981.1415

Authors

Tom M. Harris Department of Geology, University of Reading, England

DOI:

https://doi.org/10.54991/jop.1981.1415

Keywords:

Amphorispermum, Caytonia, Seeds, Middle Jurassic (England)

Abstract

A specimen showing packets of the small Caytonia-like seed Amphorispermum is described from the middle Jurassic of Yorkshire, England. Amphorispermum seeds had previously been found in large numbers but in isolation. Although some of the packets consist of about ten seeds with their flat sides in contact no tissue connecting them is preserved but the possibility that the assemblage represents a decayed fructification is suggested.

Possible leaves of the plant are considered but though Ctenis is mentioned the evidence to connect them is inadequate.

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References

Harris TM 1926. The Rhaetic flora of Scoresby Sound, East Greenland. Meddr. Gronland, 68: 45-128.

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Harris TM 1937. The fossil flora of Scoresby Sound, East Greenland-5. Meddr. Gronland, 112 (2): 1-176.

Harris TM 1958. The seed of Caytonia. The Palaeobotanist 7: 93-106. https://doi.org/10.54991/jop.1958.575

Harris TM 1964. The Yorkshire Jurassic Flora, II. Caytoniales, Cycadales and Pteridosperms. vii+191 pp., 67 figs, 7 pls. London, British Museum (Nat. Hist.).