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A lamprey from the Devonian period of South Africa
A marine/estuarine fossil lamprey from the Famennian (Late Devonian) of South Africa is reported, the identity of which is established easily because many of the key specializations of modern forms are already in place, evidence that agnathans close to modern lampreys had evolved before the end of the Devonian period.
A NEW RECONSTRUCTION OF ONYCHOSELACHE TRAQUAIRI, COMMENTS ON EARLY CHONDRICHTHYAN PECTORAL GIRDLES AND HYBODONTIFORM PHYLOGENY
This first report of material from the Mumbie Quarry exposure of the Glencartholm fish beds presents a new reconstruction of Onychoselache showing broad-based cephalic and nuchal spines, and exceptionally large pectoral fins.
Archaeopteris (Progymnospermopsida) from the Devonian of southern Africa
This occurrence is used, in its palaeogeographical context, to support the suggestion that climatic gradients in Late Devonian times were less steep than they are at present.
A symmoriiform chondrichthyan braincase and the origin of chimaeroid fishes
- M. Coates, R. Gess, J. Finarelli, Katharine E. Criswell, Kristen Tietjen
- 12 January 2017
The results of a computed tomography analysis of Dwykaselachus, an enigmatic chondrichthyan braincase from the ~280 million year old Karoo sediments of South Africa, reveal preconditions that suggest an initial morpho-functional basis for the derived chimaeroid cranium, and shed new light on the chondRichthyan response to the extinction at the end of the Devonian period.
New placoderm fishes from the Late Devonian of South Africa
The South African placoderm fauna has demonstrable links with the eastern Gondwana faunas in the close affinity of the Bothriolepis africana with B. barred of Antarctica, and the high diversity of groenlandaspid species, especially the presence of a very high crested form having affinities to Tiaraspis.
New morphological information on, and species of placoderm fish Africanaspis (Arthrodira, Placodermi) from the Late Devonian of South Africa
There is some faunal overlap between the Waterloo Farm fossil site and faunas described from Strud in Belgium and Red Hill, Pennsylvania, in north America, supporting the concept of a more cosmopolitan vertebrate fauna in the Famennian than earlier in the Devonian.
Kowieria alveoformis gen. nov. sp. nov., a new heterosporous lycophyte from the Latest Devonian of Southern Africa
Fossil juvenile coelacanths from the Devonian of South Africa shed light on the order of character acquisition in actinistians
It is argued that Serenichthys, like Rhabdoderma, was using the sheltered estuarine environment as a nursery, and is resolved as the sister group of Holopterygius and all known post-Devonian coelacanths.
Update on the flower associations of southern African Masarinae with notes on the nesting of Masarina strucki Gess and Celonites gariepensis Gess (Hymenoptera: Vespidae: Masarinae)
Vertebrate Biostratigraphy of the Witteberg Group and the Devonian-Carboniferous Boundary in South Africa
- R. Gess
Witteberg Group rocks are Late Devonian to Early Carboniferous in age. Comparison with Laurasian sea-level curves has correlated the earliest Carboniferous Tournasian transgression, with the…