摘要:

Early to Late Devonian (Emsian to late Famennian) organic walled microfossils were recovered from nineteen localities throughout the Tamworth Belt, northern New South Wales. The microfossil assemblages included poorly preserved chitinozoans and scolecodonts, spores and moderately well preserved foraminiferal linings. Fourteen species of foraminiferal linings from six genera are documented. At least three species of foramininferal linings (Inauris tubulata, Saccammina meaandThurammina pustulosa) show potential for global correlation.Saccamminasp. cf. S.ampullaceaandThurammina mirrkamay have application for correlation within Australia.

ISSN:0311-5518    

DOI:10.1080/03115519908619513

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Toothplates and skull bones from a dipnoan referred here to the genusCtenodusoccur frequently in the tetrapod-bearing member of the mid Viséan Ducabrook Formation located near the type section at Ducabrook, near Springsure, central Queensland. This is the first record of a Viséan ctenodontid, and of the genusCtenodus, in Australia, in the East Gondwana region, and in the southern hemisphere.

ISSN:0311-5518    

DOI:10.1080/03115519908619514

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

A new peltasperm,Scytophyllum bonettiaesp. nov., is described from the Middle Triassic Cortaderita Formation, San Juan, Argentina. The new species is characterised by having medium to small monopinnate, imparipinnate, lanceolate, bicoherent fronds with a free bipinnate pattern of venation, and lumps on the rachis. Recovered specimens display juvenile to adult foliage. The new taxon, together with other species, characteises late Middle Triassic-early Upper Triassic terrestrial flora from western Argentina.

ISSN:0311-5518    

DOI:10.1080/03115519908619515

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Published accounts of the Australian Triassic euthycarcinoidSynaustrus brookvalensishave not documented all known material, and are inconsistent in several respects with better known euthycarcinoids.Synaustrusis most closely related toEuthycarcinus. New morphological findings and interpretations (e.g., a slender seta on each leg annulation; a series of articulated cephalic sternites) confirm the similarity ofSynaustrusto other euthycarcinoid taxa. The evidence presented here allies euthycarcinoids with atelocerates, but they cannot be positioned higher than the stem-lineage of Atelocerata.Synaustrusand other genera possess trunk apodemes analogous to those of symphylans. Sternal pores in euthycarcinoids resemble coxal vesicles, though this conflicts with other morphological indications of aquatic habits.

ISSN:0311-5518    

DOI:10.1080/03115519908619516

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

The Cretaceous scaphopod (molluscan) fauna of mainland Australia is characterised by a rather depauperate and poorly known assemblage of five species: dentaliidsDentalium (Dentalium)n. sp. A (probably Aptian),Dentalium (Dentalium)n. sp. B (Cenomanian), andDentalium (Dentalium)n. sp. C (Maastrichtian); fustiariidFustiaria wollumbillaensis(Etheridge, Jr., 1892) (Late Aptian-Albian?); and laevidentaliidLaevidentalium cretaustraliumn. sp. (Late Albian). Each species is endemic to either the Great Artesian Basin or Carnarvon Basin of Australia. A probable sixth species is recorded from Cenomanian deposits of Bathurst Island, but the affinity of this taxon is uncertain. In some shell beds of the Allaru Formation, scaphopods dominate the preserved macrobenthos. Although at species level the fauna is endemic, strongly cosmopolitan genus level links of the scaphopods mirror that of other groups of molluscs (bivalves, gastropods, cephalopods), indicating derivation from evolutionary separation from pre-existing widespread Mesozoic stocks which experienced gradual range restriction during the late Mesozoic. A systematic checklist of all Cretaceous Austral scaphopods is provided to illuminate the palaeobiogeographic history of this little known molluscan group.

ISSN:0311-5518    

DOI:10.1080/03115519908619517

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

ISSN:0311-5518    

DOI:10.1080/03115519908619518

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor