Über Reste procoeler Crocodilier aus der obersten Kreide von Patagonien

Kuhn, Oskar

doi:10.1007/bf03041645

Cited by 5 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kuhn (1933) described fragmentary crocodyliform material, including cranial remains and vertebrae, from Punta Peligro, about 50 km south‐east of the type locality of N. ionensis . The specimens derive from approximately correlative levels of the Salamanca Formation, and although Simpson (1937) suspected a close affinity with Necrosuchus , he stopped short of making a formal referral.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…A partial dentary figured by Kuhn (1933: plate 1, fig. 1A) suggests a more broadly concave anterior end, more closely resembling that of Eocaiman than Necrosuchus , but direct comparisons are needed.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…Isolated frontals (Kuhn, 1933) suggest exclusion of the frontal from the supratemporal fenestrae, but differ from those of living caimans in lacking upturned orbital margins and being nearly planar between the orbits. There is no evidence for a ridge (‘spectacle’) anterior to the orbits, but the specimens are incomplete.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

“…The frontoparietal suture on these specimens is anteriorly convex, not linear (as in modern caimanines). More intriguing are incomplete parietals, one of which Kuhn (1933) referred to Leidyosuchus , that suggest little, if any, dorsal exposure of the supraoccipital on the skull table.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

See 3 more Smart Citations

Phylogenetic relationships ofNecrosuchus ionensisSimpson, 1937 and the early history of caimanines

Brochu

2011

Zoological Journal of the Linnean Society

102

144

View full text Add to dashboard Cite

Cranial fragments associated with the holotype of Necrosuchus ionensis reveal a dorsally shifted foramen aereum on the quadrate and a long, slender descending process of the exoccipital lateral to the basioccipital and approaching the basioccipital tubera. The former suggests that Necrosuchus is an alligatoroid and not a crocodylid, as first suggested; and the latter that it is a caiman. The scapulocoracoid shows evidence of early closure of the synchondrosis, further supporting a caiman affinity. Although we cannot yet pinpoint the phylogenetic placement of Necrosuchus amongst caimans, it nevertheless establishes a caimanine presence in South America by the Early Palaeocene. A review of other Palaeocene–Eocene caimans reveals a complex biogeographical history suggesting multiple dispersal events between North and South America, even if the modern caiman assemblage is monophyletic. © 2011 The Linnean Society of London, Zoological Journal of the Linnean Society, 2011, 163, S228–S256.

show abstract

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

Section: Systematic Palaeontologymentioning

confidence: 99%

See 2 more Smart Citations

Phylogenetic relationships ofNecrosuchus ionensisSimpson, 1937 and the early history of caimanines

Brochu

2011

Zoological Journal of the Linnean Society

102

144

View full text Add to dashboard Cite

show abstract

“…The most ancient alligatorids in this part of the continent were recorded in the Early Paleocene of Patagonia, Argentina (Kuhn, 1933;Simpson, , 1937D´Erasmo, 1934;Rusconi, 1937;Langston, 1965;Bonaparte et al, 1993;Bona, 2004Bona, , 2007. This record is extremely relevant because it includes basal forms from the Early Paleocene and Eocene, which provided key morphological information on the evolutionary history of these crocodylians (i.e., Eocaiman paleocenicus, E. cavernensis and…”

Section: Conclusionesmentioning

confidence: 99%

Reptiles Extintos - Volumen en Homenaje a Zulma Gasparini

2015

PE-APA

View full text Add to dashboard Cite

Untitled

Frossard¹,

Skrabal

Sinaj³

et al. 2002

Nutrient Cycling in Agroecosystems

108

View full text Add to dashboard Cite

Switzerland yearly produces more than 260,000 Mg of compost, two thirds of which is recycled in agriculture and horticulture. This research was undertaken to examine the forms and availability of inorganic P (Pi) in Swiss composts made from solid kitchen and garden wastes using the isotopic exchange kinetic technique, a sequential Pi extraction and magic angle spinning (MAS) solid-state 31 P nuclear magnetic resonance (NMR) spectroscopy. The different approaches described in this paper demonstrate the presence of a complex mixture of Pi species in the studied composts. Isotopic exchange experiments and sequential extraction showed that these composts contained relatively large concentrations of rapidly available Pi. Significant correlations were observed between the concentration of water-soluble Pi (Cp), and the total N, C and P content of composts suggesting that organic substances partly controlled the amount of rapidly available Pi. Significant correlations were observed in alkaline composts between the amount of Pi which can not be exchanged within 3 months and the total P and Ca content. In alkaline composts solid-state MAS 31 P NMR results suggested the presence of a range of slightly soluble and poorly crystallized Ca-P compounds such as apatites or octacalcium phosphates and of organic P compounds. The slowly or non-exchangeable Pi present in these composts could therefore be bound to Ca in the form of apatites or octacalcium phosphates.

show abstract

Über Reste procoeler Crocodilier aus der obersten Kreide von Patagonien

Cited by 5 publications

References 13 publications

Phylogenetic relationships ofNecrosuchus ionensisSimpson, 1937 and the early history of caimanines

Phylogenetic relationships ofNecrosuchus ionensisSimpson, 1937 and the early history of caimanines

Reptiles Extintos - Volumen en Homenaje a Zulma Gasparini

Untitled

Contact Info

Product

Resources

About