摘要:

Carapaces or valves of 6 species of bradoriids are described from the Early Cambrian (Canglangpu Stage) Shuigoukou Formation in Xichuan, Henan, China. They comprise four genera, including two new genera:Ovalutagen. nov. is established for some species found in China which were previously described under the name ofAluta; Phaseolellagen. nov., with distinctive carapace features, should be referred to phosphatocopines. The five new species proposed areMonasterium bucerum, Houlongdongella xichuanensis, Ovaluta henanensis, Phaseolella dimorpha, andP. curvata.

ISSN:0311-5518    

DOI:10.1080/03115518708618976

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Cranial fragments pertaining to a capitosaurid labyrinthodont from the Early Scythian Knocklofty Formation of Tasmania are described. They are referred, with question, to the genusParotosuchusOtschev and Shishkin 1968. Recent literature dealing with the systematics, morphology and palaeobiogeography of the Capitosauridae, a family widely dispersed over Pangaea during several Triassic intervals, is reviewed. It is recommended thatWetlugasaurusbe retained in synonymy withParotosuchus.

ISSN:0311-5518    

DOI:10.1080/03115518708618977

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

The poorly known plectambonitacean genusSpanodontaPrendergast is re-assessed and its type species,S. hoskingiaePrendergast 1935 from the Lower Ordovician of Western Australia, redescribed. The only other species assigned to the genus,S. tingriensisLiu, is rejected from it. The genus is considered to be most closely related toAporthophylaUlrich & Cooper and is therefore assigned to the Taffidae.

ISSN:0311-5518    

DOI:10.1080/03115518708618978

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

A new ichnotaxonTriassohyponomus dinmorensisgen. et. sp. nov. is proposed for a thigmotactic curved linear feeding trace in the voltziacean conifer leafHeidiphyllum elongatum(Morris) Retallack 1981 from the Late Triassic Ipswich Coal Measures in southeastern Queensland. It is the earliest described record of leaf mining and the first record of insect feeding in the voltziacean conifers. The record of insect/plant interactions from the Triassic is briefly reviewed.

ISSN:0311-5518    

DOI:10.1080/03115518708618979

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Four species ofPhyllopteroidesare present in the Lower Cretaceous of eastern Australia:P. laevissp. nov.,P. serratasp. nov.,P. dentataMedwell 1954a andP. lanceolata(Walkom) Medwell 1954b. The first three of these species occur in successive stratigraphic horizons in the Victorian Lower Cretaceous; they form a probable evolutionary lineage showing progressive changes in leaf morphology, particularly shape and dentation. Well-preserved osmundaceous fructifications (Cacumen expansagen. et sp. nov.) occur closely associated withP. dentataleaves, strongly suggesting thatPhyllopteroidesis an osmundaceous fern. The Lower Cretaceous megafloral zonation of Douglas (1969) is revised by defining the zone boundaries as the first occurrence of the nominatePhyllopteroidesspecies for each zone. This modified zonation can be correlated with the Lower Cretaceous microfloral zonation, and is applicable to Lower Cretaceous floras throughout eastern Australia.

ISSN:0311-5518    

DOI:10.1080/03115518708618980

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor