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1
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Tooth histology of the parareptile Soturnia caliodon from the Upper Triassic of Rio Grande do Sul, Brazil

100%
Cabreira S. F., Cisneros J. C.
Acta Palaeontologica Polonica
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2009
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tom 54
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nr 4
A histological analysis of the dentition of the small procolophonid parareptile Soturnia caliodon reveals detailed information concerning tooth implantation and replacement for this taxon. The presence of acrodont tooth implantation is verified, which contradicts current models for procolophonid dentition. A heterogeneous enamel layer, that reaches large thickness on the cusps, and a broad secondary dentine are also recorded. These structures provide a very stable occlusal morphology that extends the useful life of the teeth. During the process of replacement, old teeth were not pushed out but reabsorbed. The evidence indicates that Soturnia caliodon had a very low rate of tooth replacement which constitutes a valuable adaptation for its high−fibre herbivorous niche.
2
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Correction of homonymy of generic name Cyclophyllia Roniewicz, 1989 (Scleractinia) into Cycliphyllia nom. n.

100%
Roniewicz E.
Acta Palaeontologica Polonica
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1991
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tom 36
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nr 2
A new generic name, Cycliphyllia, is here proposed as a replacement name for Cyclophyllia Roniewiecz, 1989 (type species: Thecosmilia cyclica Schaefer et Senowbari-Daryan, 1978, Upper Triassic). The latter is a junior homonyme of Cyclophyllia Milne-Edwards et Haime, 1848 (type species: Cyclolites cristata Lamarck, 1801, Cretaceous), an invalid name, which is a junior synonyme of Aspidiscus Koenig, 1825 (Milne-Edwards 1857: t. 2, p. 386). This regrettable error has been noticed thanks to the List of generic names by Wells (1986). As a consequence of the above change, the orthography of the family name Cyclophylliidae Roniewicz, 1989 is here corrected into Cycliphylliidae.
3
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Unique bone histology in partial large bone shafts from Upper Triassic of Aust Cliff, England: An early independent experiment in gigantism

80%
Redelstorff R., Sander P. M., Galton P. M.
Acta Palaeontologica Polonica
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2014
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tom 59
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nr 3
Two giant partial bone shafts, possible femora, from the Rhaetian Bone Bed (Upper Triassic) of Aust Cliff in SW England continue to conceal their origin. The most striking characteristic of these bones is their size, showing that dinosaur-like gigantism had already evolved by the Late Triassic. Based on their characteristic, columnar shaft morphology, it was previously suggested they came from a prosauropod or stegosaur. The bone histology of both specimens is very similar: the cortex is always rather thin, not exceeding 10 mm, and is of fibrolamellar type with longitudinal primary osteons. The primary osteons show a rather unusual feature, the development of a secondary osteon inside the primary one. The bone surface in both specimens shows open vascular canals, suggesting that the animals were still growing at the time of death, but an external fundamental system (EFS) is visible in the outermost cortex of specimen BRSMG Cb3870. The external cortex shows dense growth marks, but their annual nature is difficult to ascertain. The bones are probably dinosaurian, as indicated by the fibrolamellar bone, and possibly belong to an unknown basal sauropodomorph lineage. Alternatively, some very large pseudosuchians may have evolved fibrolamellar bone independently as an adaptation for reaching giant size.
4
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The Upper Triassic flora of Svalbard

80%
Pott C.
Acta Palaeontologica Polonica
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2014
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tom 59
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nr 3
The Triassic plant fossils from the Svalbard archipelago are comprehensively reviewed. The poorly known flora is widespread and has been recovered from all Triassic exposures in the archipelago; 24 species are identified and one new species, viz. Arberophyllum substrictum, is described. The flora consists of sphenophytes, ferns, cycadophytes, and putative ginkgophytes and seed ferns. Ferns and Bennettitales are the dominant elements. The composition of the flora is strikingly similar to the Carnian flora of Lunz in Lower Austria, sharing an unexpectedly large number of taxa, and thus, it is proposed that most of the fossils derive from the De Geerdalen Formation, which is dated as Carnian. Key taxa in the Svalbard flora are Asterotheca, Neocalamites, Pterophyllum, and Arberophyllum. The floristic composition and sedimentology of the host strata suggests that the flora thrived in a coastal lagoonal/deltaic environment. The similarity of the Svalbard and Lunz floras argues that the North Atlantic floral sub-province hypothesised for the Rhaetian in this region was already established by the Carnian.
5

British Upper Triassic and Lower Jurassic Heteroptera and Coleorrhyncha [Insecta: Hemiptera]

80%
Popov Y. A.
Genus. International Journal of Invertebrate Taxonomy
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1994
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tom 05
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nr 4
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