Registration Umkomasia feistmantelii (W.B.K.Holmes et Ash) H.M.Anderson in Anderson, Barbacka, Bamford, Holmes & Anderson

Plant Fossil Names Registry Number: PFN000167

Act LSID: urn:lsid:plantfossilnames.org:act:167

Rank: species

Basionym: Karibacarpon feistmantelii W.B.K.Holmes et Ash

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Reference: Anderson, H. M., Barbacka, M., Bamford, M. K., Holmes, W.B. K. & Anderson, J. M. (2019): Umkomasia (megasporophyll); Part 1 of a reassessment of Gondwana Triassic plant genera and a reclassification of those incorrectly attributed. – Alcheringa: An Australasian Journal of Palaeontology 43(1): 1–28.

Types

Syntype AMF 59436, AMF 59439, AMF 59437, AMF 59438, AMF 59440, AMF 59445, Australian Museum, Sydney, Australia
Figures: fig. 6: 1–5, 7

Note: AMF 59436 portion of megasporophyll (fig. 6: 1)
AMF 59439 closed cupule (fig. 6: 2)
AMF 59437 lobed cupules with seeds (fig. 6: 3)
AMF 59438 counterpart to AMF 59437 (fig. 6: 4)
AMF 59440 expanded cupule (fig. 6: 5)
AMF 59445 dispersed seed (fig. 6: 7)

Original diagnosis/description

Small Karibacarpon fructification on a bipinnate megasporophyll. Closed cupules with inconspicuous ribs, 5-9 in number, usually 6. Mature cupules with lobed or petaloid margins, each enclosing one ovate platyspermic ovule. Empty cupules opening to form star-shaped "flowers".

Stratigraphy

Triassic, Lower Triassic
Horizon. Camden Head Claystone, Camden Haven Group. Late Early Triassic.

Locality

Australia
1583 in a grey siltstone lens at the base of sea cliffs on southern side of Camden Head, N.S.W.

loc. 1583 = Camden Head Claystone. In a lens of hard grey siltsone at the base of Camden Head. This is the locality from which Came (1897, 1898) , Voisey (1939) , Pratt (1970) and Retallack (1977) have collected. It is commonly called the Perpendicular Point locality but the original locality descriptions given by these authors indicate that their collections actually came from the base of Camden Head not Perpendicular Point. G. R. 846984.

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Comments

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