Lower Permian Brachiopods from Wasp Head Formation, Sydney Basin, Southeastern Australia

2014 ◽  
Vol 88 (3) ◽  
pp. 531-544 ◽  
Author(s):  
Gabriela A. Cisterna ◽  
G. R. Shi
Keyword(s):  
Sedimentary Facies ◽  
Lower Permian ◽  
Marine Fauna ◽  
Southeastern Australia ◽  
Eastern Australia ◽  
Head Formation ◽  
Low Diversity ◽  
Characteristic Species ◽  
Brachiopod Fauna ◽  
First Time

Although there is a generally accepted framework for the Permian marine biogeography of Australia, significant uncertainties remain concerning the temporal biogeographical changes closely related to the timing of Permian glacial–interglacial events. Several recent studies along these research lines demonstrate the importance of a reliable high-resolution biostratigraphical timescale for paleobiogeographical and paleoclimatic reconstructions. This paper provides, for the first time, a full taxonomic and biostratigraphical study of the brachiopod fauna from the Wasp Head Formation, southern Sydney Basin, southeastern Australia. The fauna is associated with deposits of the first Permian glacial interval suggested for eastern Australia. Three brachiopod assemblages are recognized. The lower and middle assemblages contain scarce brachiopods although associated bivalves are comparatively more common. Despite very low diversity and low abundance, these two brachiopod assemblages contain characteristic species of the Strophalosia concentrica and Strophalosia subcircularis brachiopod zones, both considered of late Asselian age. The third assemblage, occurring in the uppermost part of the formation, contains more brachiopods than bivalves and is referred to early Sakmarian in age. The species diversity and stratigraphic occurrences of the brachiopod assemblages in relation to sedimentary facies suggest that the lower two assemblages may represent an intra-glacial interval while the younger third assemblage, characterized by abundant occurrences of Trigonotreta and Tomiopsis species, accompanied by the bivalve Eurydesma, is more indicative of a post-glacial benthic marine fauna comparable to coeval brachiopod faunas found elsewhere in Gondwana.

scholarly journals The Lower Permian Wasp Head Formation, Sydney Basin: high-latitude, shallow marine sedimentation following the late Asselian to early Sakmarian glacial event in eastern Australia

Sedimentology ◽  
2008 ◽  
Vol 55 (5) ◽  
pp. 1517-1540 ◽  
Author(s):  
MICHAEL C. RYGEL ◽  
CHRISTOPHER R. FIELDING ◽  
KERRIE L. BANN ◽  
TRACY D. FRANK ◽  
LAUREN BIRGENHEIER ◽  
...  
Keyword(s):  
High Latitude ◽  
Lower Permian ◽  
Shallow Marine ◽  
Marine Sedimentation ◽  
Eastern Australia ◽  
Head Formation

scholarly journals Further observations on North African and South Iberian Bathyporeia (Crustacea, Amphipoda), with the description of a new species

2005 ◽  
Vol 74 (3-4) ◽  
pp. 279-300
Author(s):  
Cédric d’Udekem d’Acoz ◽  
Hind Myrieme Chams Echchaoui ◽  
Mohamed Menioui
Keyword(s):  
New Species ◽  
North Africa ◽  
New Records ◽  
Southern Spain ◽  
North African ◽  
Characteristic Species ◽  
South Portugal ◽  
First Time ◽  
A New Species

A new species of amphipod, Bathyporeia watkini sp. nov. from the Atlantic coasts of North Africa is described. This very characteristic species is abundant in some lagoons and estuaries near 28°N. New morphological information on B. elkaimi d’Udekem d’Acoz and Menioui, 2004 is given after specimens that were recently collected on the Atlantic coasts of southern Spain and South Portugal. The male of B. ledoyeri d’Udekem d’Acoz and Menioui, 2004 is described for the first time and new records of North African B. guilliamsoniana (Bate, 1857) and B. chevreuxi d'Udekem d'Acoz and Vader, 2005a are discussed.

Spatangoid echinoids from the Eocene of Jamaica

2000 ◽  
Vol 74 (4) ◽  
pp. 654-661 ◽  
Author(s):  
Stephen K. Donovan ◽  
Deborah-Ann C. Rowe
Keyword(s):  
New Species ◽  
First Record ◽  
Trace Fossils ◽  
Upper Eocene ◽  
Area Effects ◽  
Low Diversity ◽  
First Time ◽  
Incomplete Sampling

Paleocene spatangoids are unknown from the Antilles, apart from evidence from trace fossils. The peak of spatangoid diversity was the Eocene. Jamaican Oligo-Miocene spatangoids have a relatively low diversity compared with that of the Antillean region. Plio-Pleistocene spatangoids are poorly known from the Antilles (four genera), in contrast to the Oligo-Miocene (16 genera) and Holocene (17 genera). The depauperate Paleocene and Plio-Pleistocene spatangoid faunas are probably in part artifacts of incomplete sampling, facies-related absences, outcrop area effects and the relative brevity of these stratigraphic intervals.To the large echinoid fauna of the Swanswick Formation (Middle-Upper Eocene) of Jamaica is added the schizasterid Aguayoaster schickleri new species. This is the first record of this genus outside Cuba; it is distinctly more elongate than all other known specimens of this genus. The schizasterid Caribbaster loveni (Cotteau, 1875) is recorded from the Swanswick Formation for the first time, the youngest occurrence of this genus in Jamaica. The coeval Claremont Formation has not previously yielded spatangoid echinoids; the brissid Eupatagus cf. antillarum (Cotteau) from a new locality is the first spatangoid known from a lagoonal unit of the White Limestone Group.

scholarly journals Towards community-driven paleogeographic reconstructions: integrating open-access paleogeographic and paleobiology data with plate tectonics

2013 ◽  
Vol 10 (3) ◽  
pp. 1529-1541 ◽  
Author(s):  
N. Wright ◽  
S. Zahirovic ◽  
R. D. Müller ◽  
M. Seton
Keyword(s):  
Ocean Circulation ◽  
Plate Tectonics ◽  
Numerical Models ◽  
Plate Motion ◽  
Temporal Data Mining ◽  
Dynamic Topography ◽  
Southeastern Australia ◽  
Eastern Australia ◽  
Spatio Temporal ◽  
Fossil Data

Abstract. A variety of paleogeographic reconstructions have been published, with applications ranging from paleoclimate, ocean circulation and faunal radiation models to resource exploration; yet their uncertainties remain difficult to assess as they are generally presented as low-resolution static maps. We present a methodology for ground-truthing the digital Palaeogeographic Atlas of Australia by linking the GPlates plate reconstruction tool to the global Paleobiology Database and a Phanerozoic plate motion model. We develop a spatio-temporal data mining workflow to validate the Phanerozoic Palaeogeographic Atlas of Australia with paleoenvironments derived from fossil data. While there is general agreement between fossil data and the paleogeographic model, the methodology highlights key inconsistencies. The Early Devonian paleogeographic model of southeastern Australia insufficiently describes the Emsian inundation that may be refined using biofacies distributions. Additionally, the paleogeographic model and fossil data can be used to strengthen numerical models, such as the dynamic topography and the associated inundation of eastern Australia during the Cretaceous. Although paleobiology data provide constraints only for paleoenvironments with high preservation potential of organisms, our approach enables the use of additional proxy data to generate improved paleogeographic reconstructions.

scholarly journals PERMIAN NON-MARINE BIVALVES FROM THE COLLIO AND GUNCINA FORMATIONS (SOUTHERN ALPS, ITALY): REVISED BIOSTRATIGRAPHY AND PALAEOBIOGEOGRAPHY

2022 ◽  
Vol 128 (1) ◽  
Author(s):  
VLADIMIR SILANTIEV ◽  
LORENZO MARCHETTI ◽  
AUSONIO RONCHI ◽  
PAOLO SCHIROLLI ◽  
FRANK SCHOLZE ◽  
...  
Keyword(s):  
Eastern Europe ◽  
Global Scale ◽  
Southern Alps ◽  
Lower Permian ◽  
Migration Routes ◽  
Center Of Origin ◽  
Marine Bivalves ◽  
Radioisotopic Dating ◽  
First Time ◽  
Marine Basins

Non-marine bivalves are key fossils in Permian continental stratigraphy and palaeogeography. Although known since the end of 19th century, the occurrences from the continental basins of the Southern Alps have never been extensively studied. The non-marine bivalves from the Lower Permian Collio Formation (Brescian pre-Alps) are herein revised, and those from the Guncina Formation (Athesian District) are described for the first time. These two units yielded non-marine bivalves belonging to the genus Palaeomutela sensu lato, which is widespread in the Permian continental successions of eastern Euramerica. Three Palaeomutela morphotypes have been herein described: oval-subtriangular, subtrapezoidal and elongated. The latter includes several specimens herein assigned to Palaeomutela (Palaeanodonta) berrutii sp. nov. and dominates the Collio Formation association. The Guncina Formation yielded also the genus Redikorella, for the first time co-occurring on the same stratigraphic horizon of Palaeomutela, herein assigned to Palaeomutela (Palaeanodonta) guncinaensis sp. nov. To-date, it was generally accepted that the first members of the genera Palaeomutela and Redikorella occurred during the Ufimian (late Kungurian of the global scale) in the non-marine basins of the Cis-Ural Foredeep and of Angara, respectively. Such new finds in the early-middle Kungurian of southwestern Europe, well constrained by radioisotopic dating, suggest new global first appearance (First Appearance Datum) and a possible new center of origin of these genera. This fact raises new questions on biostratigraphy, palaeobiogeography and palaeoecology, which will require further research. If we assume that the genera Palaeomutela and Redikorella had only one center of origin, we need to hypothesise possible migration routes from SW Europe to the continental basins of Eastern Europe and Angara. Apparently, such migration could be better supported by a Pangaea B palaeogeographic configuration.

scholarly journals LOS CAMARONES DE LA FAMILIA CRANGONIDAE DE LA FRANJA SUPERIOR DEL TALUD CONTINENTAL DEL MAR CARIBE COLOMBIANO

2016 ◽  
Vol 31 ◽  
Author(s):  
Norella Cruz ◽  
Adriana Bermúdez ◽  
Néstor Hernando Campos ◽  
Gabriel Navas
Keyword(s):  
Continental Slope ◽  
Geographic Distribution ◽  
Caribbean Sea ◽  
Marine Fauna ◽  
Diagnostic Characters ◽  
Morphological Variations ◽  
Identification Keys ◽  
First Time

Four surveys were conducted between October 1998 and April 1999 along the upper section of the Colombian Caribbean Sea continental slope with the aim of compliting marine fauna inventories. During the surveys (INVEMAR-MACROFAUNA 1) individuals of the shrimps Parapontocaris caribbaea, P. vicina, Prionocrangon pectinata and Parapontophilus gracilis (Decapoda: Crangonidae) were found and are herein registered for the first time in Colombian waters. Along with the description of the collected material and reference to site of collection, identification keys, diagnostic characters, diagrams and bathimetric and geographic distribution are included as well as comments on morphological variations of the individuals.

The sediment-landform assemblage in the forefield of the Gepatsch Glacier, Tirol, Austria and its preservation potential

2021 ◽  
Author(s):  
Daniel Le Heron ◽  
Bethan Davies ◽  
Lars Scharfenberg ◽  
Christoph Kettler ◽  
Michael Ketterman ◽  
...  
Keyword(s):  
Sedimentary Facies ◽  
Erosion And Deposition ◽  
Glacial Sediments ◽  
Time Period ◽  
Digital Elevation ◽  
Preservation Potential ◽  
Elevation Changes ◽  
Sand And Gravel ◽  
First Time

<p>Ongoing monitoring of the Gepatsch Glacier, Tirol (Austria) consists of a multifaceted, interdisciplinary project which aims to characterise short term (diurnal in the summer melt season) and longer term (annual to decadal) changes to the glacier snout and forefield in the context of a rapid retreating valley glacier. The glacial valley and forefield comprises amphibolites, para- and orthogneisses that have been smoothed and striated into whalebacks, compound bedrock-sediment bedforms (crag and tail structures), flutes, and annual moraines. The glacial sediments and landforms are undergoing incision and terrace development by meltwater streams. As part of a long term goal to characterise the rates of erosion, sedimentation, and re-deposition, we return to the same site each year in mid-July to collect airborne data with an UAV (Mavic Pro drone) that allows us to produce orthophotos and digital elevation models. We compute the daily and annual elevation changes, allowing us determine zones of erosion and deposition. Measureable evidence for erosion of flutes in the immediate glacial forefield has occurred over a 12-month time period. Till deposited within the last 20 years has undergone substantial mass wasting and re-deposition as subaerial mass flows, or reworked into stream deposits. The lee side of many whaleback structures completely lacks subglacial sediment, and contains instead a sand and gravel deposit interpreted to result from waterlain deposition. Thus, this case study area offers insight into the rates of erosion and deposition in a complex, proglacial setting, allowing some of these processes to be quantified for the first time. This approach is expected to yield a better understanding of the preservation potential of proglacial sedimentary facies, and hence their preservation potential in Earth’s sedimentary record.</p>

Systematics of the Australian golden trapdoor spiders of the Euoplos variabilis-group (Mygalomorphae : Idiopidae : Euoplini): parapatry and sympatry between closely related species in subtropical Queensland

2021 ◽  
Author(s):  
Jeremy D. Wilson ◽  
Michael G. Rix
Keyword(s):  
Species Delimitation ◽  
Systematic Approach ◽  
Sequence Data ◽  
Future Research ◽  
Populated Area ◽  
Closely Related Species ◽  
Taxonomic Description ◽  
Eastern Australia ◽  
First Time ◽  
Adequate Data

The Australian golden trapdoor spiders of the tribe Euoplini (family Idiopidae) are among the most abundant and diverse of mygalomorph lineages in subtropical eastern Australia. Throughout this highly populated area, species in the monophyletic Euoplos variabilis-group are largely ubiquitous; however, species delimitation has long proven difficult in the group because species are morphologically very similar and have parapatric or even sympatric distributions. We address these challenges in the variabilis-group, and explore the phylogeny and taxonomy of species using an integrative systematic approach. In doing so, we apply a conservative, pragmatic methodology, naming only species for which adequate data are available (namely sequence data and unequivocally linked male specimens), and explicitly stating and mapping material that could not be linked to a species, to aid future research on the group. We describe five new species from south-eastern Queensland –E. booloumba sp. nov., E. jayneae sp. nov., E. raveni sp. nov., E. regalis sp. nov. and E. schmidti sp. nov.; we redescribe two previously named species – E. similaris (Rainbow & Pulleine, 1918) and E. variabilis (Rainbow & Pulleine, 1918); and we reillustrate the recently described E. grandis Wilson & Rix, 2019. The nominate species, E. variabilis, is shown to have a far smaller distribution than previously thought, and E. similaris is given a modern taxonomic description for the first time. A key to adult male specimens is also provided. This study further reveals a case of sympatry between two species within the variabilis-group; both E. raveni sp. nov. and E. schmidti sp. nov. occur in the Brisbane Valley, south of the Brisbane River – a notable result given that closely related mygalomorph species usually occur allopatrically. This work updates what is currently known of the phylogeny and diversity of one of the dominant mygalomorph lineages of subtropical eastern Australia, resolving a complex and highly endemic fauna. http://zoobank.org/urn:lsid:zoobank.org:pub:A4FB92F6-EFFF-4468-B1D8-000D69923996

Biodiversity of intertidal marine flatworms (Polycladida, Platyhelminthes) in southeastern Australia

Zootaxa ◽  
2021 ◽  
Vol 5024 (1) ◽  
pp. 1-63
Author(s):  
JORGE RODRÍGUEZ ◽  
PAT A. HUTCHINGS ◽  
JANE E. WILLIAMSON
Keyword(s):  
Dna Sequences ◽  
New South ◽  
Marine Biota ◽  
Free Living ◽  
Marine Fauna ◽  
Southeastern Australia ◽  
Marine Habitats ◽  
South Wales ◽  
Molecular Sequencing ◽  
Insight Into

Flatworms of the Order Polycladida are a group of free-living invertebrates found in a diversity of marine habitats, with over 800 species described worldwide. Marine flatworms are a conspicuous component of Australia’s marine fauna yet have received little attention. Less than 30 scientific articles have been published on Australian marine flatworms since 1855, of which only nine include species from southeastern Australia. Here, the biodiversity and distribution of species belonging to the Order Polycladida inhabiting intertidal rocky beaches in southeastern Australian waters were identified and analysed. Sampling was conducted at low tide along the coasts of New South Wales and Victoria. Collected samples were serially sectioned for comparative anatomical studies, and tissue was removed from each individual for molecular sequencing and analyses. Both nuclear and mitochondrial DNA sequences were obtained and used as an additional source of evidence for the description of new species as well as providing further insight into the phylogenetic relationships between them. A total of 20 species, six of which are new (e.g., Eulatocestus australis sp. nov.), and a new genus (Parabolia gen. nov.) have been described, as well as two new records for Australia (e.g., Stylochoplana clara Kato, 1937) have been identified increasing our knowledge of this important component of the Australian marine biota.  

Drosophilidae of Australia. 4. Mycodrosophila

1980 ◽  
Vol 28 (2) ◽  
pp. 261 ◽  
Author(s):  
IR Bock
Keyword(s):  
New South ◽  
East Asian ◽  
New South Wales ◽  
The South ◽  
Asian Species ◽  
South Wales ◽  
Eastern Australia ◽  
First Time

The Australian Mycodrosophila fauna comprises 21 species distributed in northern and eastern Australia to southern New South Wales. Only one species, M. argentifrons Malloch, is previously described from Australia; the south-east Asian species M. separata (de Meijere) is recorded for the first time. The remaining 19 species are new: adequate material has been available to permit the description and naming of 18 of them.

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