摘要:

Ten species of strophomenid and triplesiid brachiopods are described from the Late Ordovician (late Caradoc to early Ashgill) Dulankara Regional Stage of Central Kazakhstan. They represent part of a diverse brachiopod assemblage, which was discovered in the top of a carbonate mound in the northern Betpak-Dala Desert. This brachiopod assemblage includes mostly genera not recorded previously from contemporaneous deposits in Kazakhstan, although they may be related to the long-lived lineages which appeared in the area during Llanvirn or Llandeilo. New taxa are: the plectambonitoidsBandaleta planagen. et sp. nov.,Shlyginia perplexasp. nov.,Sortanella quinquecostatagen. et sp. nov.,Anoptambonites subcarinatussp. nov.,Anisopleurella amplasp. nov.,Craspedelia roomusoksisp. nov., and triplesioidTriplesia sortanensissp. nov.

ISSN:0311-5518    

DOI:10.1080/03115519608619219

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

Impressions of what appear to be pedal digits II and III of a bird have been found in the Eocene Redbank Plains Formation, Brisbane, Queensland. These represent some of the oldest Cainozoic avian fossils from Australia. The broad phalanges and the phalangeal proportions indicate that the Redbank Plains bird foot was from a ground dweller. Paired processes for the flexor tendons on the proximoventral margin of phalanx 1 digit III are absent. Relative proportions of the phalanges and number of phalanges in digits II and III are similar to those of dromornithids. These two characters shared with dromornithids suggest that the Redbank Plains bird may represent the oldest known member of that clade.

ISSN:0311-5518    

DOI:10.1080/03115519608619220

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

An orthopteran wing fragment from the Upper Jurassic (Tithonian) of New Zealand is described asNotohagla mauiin. gen. et sp. and placed near species from the Jurassic-Cretaceous of Central Asia. Closely associated stratigraphically is a moulted abdomen of an urdid isopodUrda zelandican. sp., similar to a Lower Cretaceous form from the Antarctic Peninsula.

ISSN:0311-5518    

DOI:10.1080/03115519608619221

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

A diverse assemblage of foraminifera, radiolaria, and calcareous nannoplankton is recorded from basal beds of the Gearle Silstone in its type area. The calcareous nannofossils place the strata within the temperate-latitude CC8a Subzone and the Southern OceanSollasites falklandensisSubzone; the planktonic foraminifera indicate that the beds belong to theHedbergella planispiraZone of the Australian region. The biozones suggest an early Albian age (later than the earliest Albian). Abundant calcareous and siliceous plankton and theMarssonellaAssociation of benthonic foraminifera indicate normal-marine depositional conditions in a water depth of about 100 m. The transition from Windalia Radiolarite to Gearle Siltstone may reflect a marine transgressive pulse that reactivated bottom-water circulation and facilitated a significant increase in the calcareous biogenic component of the sediment. Deposition of the basal Gearle Siltstone was coincident with a major increase in bathymetry in the Papuan, Laura, Carpentaria, Eromanga and Surat Basins in eastern Australia.

ISSN:0311-5518    

DOI:10.1080/03115519608619222

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

ISSN:0311-5518    

DOI:10.1080/03115519608619223

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

An unusual plant fossil of unknown affinities is reported from the Late Carboniferous of New South Wales.Burdekinia multiseptatagen. et sp. nov. is known from a straplike organ, externally rather featureless, but characterised by a distinctive internal structure of regular transverse sphenopsid-like partitions which form rectangular sections. These sections are filled with a lattice-work of about six parallel rows of small chambers which resembles the internal structure formed by aerenchyma cells in the leaves of the extant marsh plants in the genusTypha.

ISSN:0311-5518    

DOI:10.1080/03115519608619224

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor

摘要:

The Early Cretaceous Otway and Strzelecki Groups exposed on the southern coast of Victoria, Australia, have produced a fauna of dinosaurs that lived within the Antarctic Circle. As many as five or six species of hypsilophodontids numerically dominate the collections from there, but the rarer and more fragmentary theropod remains suggest a surprising diversity of carnivorous dinosaurs. A possible surangular and an isolated vertebra have characters considered diagnostic for Late Cretaceous oviraptorosaurs of the Northern Hemisphere. Other fossils suggest the presence of ornithomimosaurs, dromaeosaurids and neoceratopsians, and with the possible oviraptorosaur remains, challenge the widespread assumption that these animals originated on the northern continents.

ISSN:0311-5518    

DOI:10.1080/03115519608619225

出版商:Taylor & Francis Group    

年代:1996

数据来源: Taylor