Tympania merrionii Gess, Prestianni et E.Capel

Plant Fossil Names Registry Number: PFN003809

Act LSID: urn:lsid:plantfossilnames.org:act:3809

Authors: R. W. Gess, C. Prestianni & E. Capel

Rank: species

Genus: Tympania Gess, Prestianni et E.Capel

Reference for this name: Gess, R. W., Prestianni, C. & Capel, E. (2026): Giant Lochkovian cooksonioids from circumpolar Gondwanan strata of South Africa. – Papers in Palaeontology 12(6): e70136.

Original diagnosis/description

As for genus. Plant at least 70 mm high. Axes width 2.2 – (4.6) – 7.0 mm. At least twice dichotomous. Branching angles between 45 and 52°. Increase of axis width in between dichotomies reaching 37 to 213 %. Decrease in width of axes after dichotomy between 40 and 56 %. Sporangia reaching 4.7 – (5.3) – 5.8 mm in height and 6.2 – (6.9) – 7.5 mm in width.

Stratigraphy

Devonian, Lower Devonian, Lochkovian

Locality

South Africa
Impofu Dam, Kouga Municipality, Eastern Cape