Taxonomic revision of buchanosteoid placoderms (Arthrodira) from the Early Devonian of south-eastern Australia and Arctic Russia

2014 ◽  
Vol 62 (1) ◽  
pp. 26 ◽  
Author(s):  
J. A. Long ◽  
E. Mark-Kurik ◽  
G. C. Young
Keyword(s):  
Taxonomic Revision ◽  
Lateral Plate ◽  
Early Devonian ◽  
South Eastern ◽  
Skull Roof ◽  
New Family ◽  
Eastern Australia ◽  
Marginal Plates ◽  
Severnaya Zemlya ◽  
South Eastern Australia

The ‘buchanosteid’ placoderms are best known from the Early Devonian of Australia, but also occur in China, Russia, Central Asia and the Middle East. Here we rediagnose the type species Buchanosteus confertituberculatus (Hills 1936) from the type locality at Buchan, Victoria, in the light of new material of both head and trunk shields. The superfamily Buchanosteoidea Denison, 1978 is redefined to unite taxa that share a similar skull roof with separate rostro-pineal (ethmoid) bone, and postethmoid skull pattern characterised by a large trapezoidal nuchal, strap-like short and broad preorbitals, large subrectangular centrals, small postorbitals not contacting the paranuchals, and large, elongate marginal plates. The Family Buchanosteidae is redefined on skull roof and parasphenoid shape and trunk armour features as a monotypic family within the Buchanosteoidea. A new family (Parabuchanosteidae nov.) includes taxa with the posterior lateral plate overlapping the anterior dorsolateral plate externally. Two new buchanosteids are described, Richardosteus barwickorum gen. et sp. nov., from Burrinjuck, south-eastern Australia, and Urvaspis lithuanica gen. et sp. nov., from Severnaya Zemlya, Russia.

Xenosellidae, a new family of Janiroidea (Asellota: Isopoda:  Crustacea), for Xenosella coxospinosa gen. nov., sp. nov.,  from the marine bathyal of eastern Australia

Zootaxa ◽  
2005 ◽  
Vol 1085 (1) ◽  
pp. 21 ◽  
Author(s):  
JEAN JUST
Keyword(s):  
New Species ◽  
Body Shape ◽  
New Genus ◽  
New Genus And Species ◽  
South Eastern ◽  
Incertae Sedis ◽  
New Family ◽  
Eastern Australia ◽  
Similar Body ◽  
South Eastern Australia

A new genus and species of janiroidean Asellota, Xenosella coxospinosa, is described from the mid-bathyal slope off the coast of south-eastern Australia. Following a comparison of the new species to several families of broadly similar body shape, with emphasis on monotypic Pleurocopidae, a new family, Xenosellidae, is proposed for the new species. In the course of comparing relevant taxa, the current placements of Prethura Kensley in the Santiidae and Salvatiella Müller in the Munnidae are rejected. The two genera are considered to be incertae sedis within the Asellota superfamily Janiroidea pending further studies.

scholarly journals Parasitic Wasps of the Proctotrupoid Complex: a New Family From Australia and a Key to World Families (Hymenoptera: Proctotrupoidea Sensu Lato).

1985 ◽  
Vol 33 (5) ◽  
pp. 761 ◽  
Author(s):  
ID Naumann ◽  
L Masner
Keyword(s):  
Sister Group ◽  
Parasitic Wasps ◽  
South Eastern ◽  
New Family ◽  
Eastern Australia ◽  
The World ◽  
Biological Characters ◽  
South Eastern Australia

A new family Peradeniidae is proposed for Peradenia, gen. nov., comprising P, clavipes, sp. nov. and P. micranepsia, sp. nov. from south-eastern Australia. Peradeniidae is assigned to the proctotrupoid complex of parasitic wasps, as the sister group of the Heloridae. Extant proctotrupoid families of the world are compared with respect to 43 morphological and biological characters, and an illustrated key to families is provided.

Genetic variation and phylogeography of the Australian and New Zealand fern Asplenium flabellifolium (Aspleniaceae)

2020 ◽  
Author(s):  
Daniel J. Ohlsen ◽  
Lara D. Shepherd ◽  
Leon R. Perrie ◽  
Patrick J. Brownsey ◽  
Michael J. Bayly
Keyword(s):  
Genetic Variation ◽  
New Zealand ◽  
Breeding System ◽  
Taxonomic Revision ◽  
Morphological Features ◽  
South Eastern ◽  
Tasman Sea ◽  
Eastern Australia ◽  
South Eastern Australia

Asplenium flabellifolium Cav. is a cytologically variable Australian and New Zealand fern. Here, we sequence chloroplast trnL-trnF and rps4-trnS from samples throughout its range to provide the first phylogeographic investigation of a fern common in both countries. Twenty-three haplotypes were detected, which formed six haplogroups in a network. Australian specimens were placed in all haplogroups. The placement of New Zealand haplotypes in five of the haplogroups suggests that this species has dispersed across the Tasman Sea at least five times. Sexually reproducing plants of lower ploidy, detected only in south-eastern Australia, contained haplotypes from the two haplogroups that are successive sisters to the remaining diversity in the phylogeny. This likely suggests that A. flabellifolium was originally a sexually reproducing species in south-eastern Australia and spread to the rest of its distribution where apomictic plants dominate. More than one haplogroup was detected in several areas across its distribution, suggesting that these areas were colonised several times. Other areas harboured several haplotypes from a single haplogroup or haplogroups not recovered elsewhere, indicating possible long-term persistence in these areas. Haplotypes and morphological features were not found to be exclusive to either breeding system or ploidy and no taxonomic revision is proposed.

Vicmusia duplocoxa, gen. et sp.nov., (Crustacea : Amphipoda : Gammaridea) of the new family Vicmusiidae from Australian upper bathyal waters

1989 ◽  
Vol 3 (7) ◽  
pp. 925 ◽  
Author(s):  
J Just
Keyword(s):  
South Eastern ◽  
Incertae Sedis ◽  
New Family ◽  
Eastern Australia ◽  
South Eastern Australia

Vicmusia duplocoxa, gen, et sp. nov., from a depth of 400 m in the Bass Strait Canyon off south-eastern Australia is described. The species possesses three unique apomorphisms: pereonal and pleonal tergites are divided laterally (one dorsal and two lateral subplates to each tergite); coxal plate 2 is strongly reduced among long plates 1, 3 and 4; mouthparts are produced into a setose forward-pointing funnel. The species cannot readily be placed in any of the currently diagnosed gammaridean superfamilies or families, so the new family Vicmusiidae is erected but for now is left as Gammaridea, incertae sedis.

Sign in / Sign up

Export Citation Format

Share Document