Protosuchus, Proterochampsa, and the origin of phytosaurs and crocodiles

1968 ◽  
Vol 105 (1) ◽  
pp. 1-14 ◽  
Author(s):  
A. D. Walker
Keyword(s):  
South African ◽  
Late Triassic ◽  
The South ◽  
The Family ◽  
Connecticut Valley ◽  
African Genus

SUMMARYStudy of casts of Stegomosuchus, a small reptile from the Upper Trias of the Connecticut Valley, hitherto regarded as a pseudosuchian thecodont, suggests that the skull of Protosuchus includes two pairs of supraorbital bones, and as a consequence the narrow interorbital region indicates a closer relationship to the South African genus Notochampsa than has previously been thought. These three genera of late Triassic crocodilians are placed in the family Stegomosuchidae von Huene, 1922. Proterochampsa, from the Ischigualasto Formation of Argentina, described by Reig (1959) and Sill (1967) as an ancestral crocodile, is considered to be an extremely primitive phytosaur.

Assessment of lateral compression of the idiosoma in adult water mites as a taxonomic character and reclassification of Frontipodopsis Walter, Wettina Piersig and some other basal Hygrobatoidea (Acari : Hydrachnida)

2000 ◽  
Vol 14 (4) ◽  
pp. 433 ◽  
Author(s):  
David R. Cook ◽  
Ian M. Smith ◽  
Mark S. Harvey
Keyword(s):  
South African ◽  
Sister Group ◽  
Western Hemisphere ◽  
Water Mites ◽  
Lateral Compression ◽  
The South ◽  
The Family ◽  
Apparent Relationship ◽  
African Genus ◽  
Family Classification

Systematists have frequently interpreted lateral compression of the idiosoma in post-larval instars of water mites as a synapomorphy indicating common ancestry. This paper re-examines the evidence to support this assumption and concludes that lateral flattening has occurred independently several times during water mite evolution, and especially often in various basal clades of the superfamily Hygrobatoidea. Reassessment of the phylogenetic relationships of the genera attributed to these clades results in improved understanding of the early evolution and biogeography of hygrobatoid water mites and necessitates redefinition of several clades and significant revision of the family classification. The South African genus Karlvietsia K.O. Viets, 1962 is transferred from the subfamily Frontipodopsinae of the family Aturidae to the Hygrobatidae. The Australian genera Tasmanaxona Cook, 1986, Wheenyella Cook, 1986 and Wheenyoides Harvey, 1990 are also removed from Frontipodopsinae and placed with the genus Wettina Piersig, 1892, here removed from the family Pionidae, in the family Wettinidae Cook, stat. nov. Based on apparent relationship with members of Wettinidae, the South African genus Stormaxonella K.O. Viets, 1962 is transferred from the Aturidae and provisionally placed in the Wettinidae. The clade including the predominately Holarctic genus Lethaxona K.H. Viets, 1932 and the Western Hemisphere genus LethaxonellaCook, 1963 is recognised as the probable sister group of Wettinidae, and these genera are consequently removed from the Aturidae and placed in Lethaxonidae, fam. nov. The genus Frontipodopsis Walter is reassigned from Aturidae to the now monobasic family Frontipodopsidae K.H. Viets, stat. nov. Finally, five new species are described, including Frontipodopsis (Frontipodopsella) sudafricanus, sp. nov., Wettina occidentalis, sp. nov., Karlvietsia simplex, sp. nov., Hygrobates (Hygrobates) gereckei, sp. nov. and Hygrobates (Hygrobatides)frontipodoides, sp. nov., and both Karlvietsia brevipalpis K.O. Viets and K. angustipalpis K.O. Viets are redescribed.

Morphological observations on leaf haustoria and related organs of the South African genus Hyobanche (Scrophulariaceae)

1978 ◽  
Vol 56 (23) ◽  
pp. 2981-2986 ◽  
Author(s):  
Job Kuijt ◽  
J. H. Visser ◽  
H. Chr. Weber
Keyword(s):  
South African ◽  
The South ◽  
African Genus ◽  
Rhizome System

Most haustoria in Hyobanche (Scrophulariaceae) are formed directly from the scale leaves of the extensive rhizome system and may be found on adaxial surfaces, margins, or tips of such leafy organs. The only exceptions are occasional haustoria, emerging from rhizome areas between adjacent scale leaves, and the primary haustorium. Host roots appear to be attracted to the rhizome, growing along its surface and apparently eliciting haustorial formation in adjoining parasitic tissues. The established parasite is completely rootless.

Revision of the South African genus Neopimus (Coleoptera: Staphylinidae: Paederinae)

Zootaxa ◽  
2019 ◽  
Vol 4577 (2) ◽  
pp. 361
Author(s):  
JIŘÍ JANÁK
Keyword(s):  
South Africa ◽  
South African ◽  
Eastern Cape Province ◽  
Eastern Cape ◽  
The South ◽  
Additional Material ◽  
Kwazulu Natal ◽  
First Time ◽  
African Genus

A revision of the south African genus Neopimus Özdikmen, Demir & Türkeş, 2008 is presented. Based on revision of the type and additional material, three species are recognised. The genus Neopimus is redescribed and all species are described or redescribed and illustrated, two of them for the first time: Neopimus capensis Janák, sp. nov., from Eastern Cape Province, South Africa and N. zulu Janák, sp. nov., from KwaZulu-Natal Province, South Africa. The distribution of the genus is mapped and a key of species is presented. 

scholarly journals Where the two logics of institutional theory and entrepreneurship merge: are family businesses caught in the past or stuck in the future?

2013 ◽  
Vol 16 (4) ◽  
pp. 452-467 ◽  
Author(s):  
Ethel Brundin ◽  
Caroline Vigren-Kristoferson
Keyword(s):  
Institutional Theory ◽  
South African ◽  
Family Firm ◽  
Family Businesses ◽  
Wine Industry ◽  
The South ◽  
The Past ◽  
The Family ◽  
Entrepreneurial Activities ◽  
Practical Implications

The aim of this article is to investigate how owners of family businesses combine their traditional heritage with changes in a new competitive arena. This is done by allowing the owners and managers of six vineyards to give voice to their concerns about the past, present, and future. The findings suggest that family businesses in the South African wine industry are subject to a process of institutionalisation in which entrepreneurial activities, which are part of this process, may not be as entrepreneurial as they appear at first. It is found that the two forms of logic behind the institutionalisation of the family firm and entrepreneurial activities in the context of the post-apartheid era can be successfully merged. Theoretical and practical implications bring the article to a close. 

A new phylogenetic analysis of the Sphaerotheriida (Diplopoda) with a revision of the Australian giant pill-millipedes

2014 ◽  
Vol 28 (2) ◽  
pp. 196 ◽  
Author(s):  
Thomas Wesener
Keyword(s):  
Phylogenetic Analysis ◽  
South African ◽  
Type Species ◽  
Morphological Characters ◽  
The Other ◽  
Current Position ◽  
The South ◽  
Sem Images ◽  
New Family ◽  
The Family

Cyliosoma Pocock, 1895, the oldest available genus name for Australian giant pill-millipedes, is revised with a redescription of its type species, Sphaerotherium angulatum Butler, 1878. All 16 species of Epicyliosoma Silvestri, 1917 are transferred to Cyliosoma, together with two species, Sphaerotherium fraternum Butler, 1872 and S. marginepunctatum Karsch, 1881, which are redescribed here. A new phylogenetic analysis of the Sphaerotheriida was conducted using 100 morphological characters and including two Cyliosoma species and four recently described or redescribed species of the family Zephroniidae. Most character states are illustrated for Cyliosoma, including the first SEM images of a member of the genus. Cyliosoma is neither closely related to the South African Sphaerotherium, nor to the other Australian genus, Procyliosoma, and is here placed in a new family, Cyliosomatidae. The monotypic Australian genus Cynotelopus Jeekel, 1986 is also referred to the Cyliosomatidae. The current position of the Cyliosomatidae is in a trichotomy including the South African Sphaerotheriidae and the Malagasy–Indian Arthrosphaeridae.

A revision of the southern African katydid genus Griffiniana Karny (Orthoptera: Tettigoniidae: Mecopodinae)

Zootaxa ◽  
2012 ◽  
Vol 3218 (1) ◽  
pp. 47 ◽  
Author(s):  
PIOTR NASKRECKI ◽  
CORINNA S. BAZELET
Keyword(s):  
South African ◽  
Junior Synonym ◽  
Western Cape ◽  
Acoustic Behavior ◽  
Key To Species ◽  
The South ◽  
Western Cape Province ◽  
African Genus

The South African genus Griffiniana Karny of squamipterous to macropterous katydids (Tettigoniidae: Mecopodinae:Aprosphylini) is revised and a key to species is provided; G. duplessisae sp. n. from the Western Cape Province is de-scribed; acoustic behavior of G. capensis Karny, G. duplessisae, and G. longipes (Naskrecki) is described. The genusEwanella Naskrecki is considered a junior synonym of Griffiniana, and E. breviuscula Gorochov is synonymized with G. longipes.

Sign in / Sign up

Export Citation Format

Share Document