Neogene Continental Deposits of Bahia Blanca, Argentina. Palaeoenvironmental and Palaeoclimatic Inferences

2019 ◽  
pp. 40-57
Author(s):  
Silvia C. Grill ◽  
Mauro L. Gómez Samus ◽  
Ana L. Fernández
Keyword(s):  
Continental Deposits

scholarly journals Revision of Triassic stratigraphy of the Scoresby Land and Jameson Land region, East Greenland

1974 ◽  
Vol 109 ◽  
pp. 1-51
Author(s):  
K Perch-Nielsen ◽  
K Birkenmajer ◽  
T Birkelund ◽  
M Aellen
Keyword(s):  
Marine Sediments ◽  
Total Thickness ◽  
Red Beds ◽  
East Greenland ◽  
Continental Deposits ◽  
Land Region

A revised stratigraphic scheme is presented for the Triassic rocks between Kong Oscars Fjord and Scoresby Sund, East Greenland. The Triassic succession is described as the Scoresby Land Group comprising four formations. The lower two formations (Wordie Creek Formation and Pingo Dal Formation) belong to the Nordenskiöld Bjerg Subgroup, while the upper two formations (Gipsdalen Formation and Fleming Fjord Formation) belong to the Kap Biot Subgroup. The total thickness of the Triassic sequence attains 1000 to 1500 m of which less than half is composed of marine sediments. The remainder consists of continental deposits and includes red-beds with an important evaporite complex in the middle of the succession.

scholarly journals First record of tetrapod footprints from the Carboniferous Mesters Vig Formation in East Greenland.

2016 ◽  
Vol 64 ◽  
pp. 69-76
Author(s):  
Jesper Milàn ◽  
Hendrik Klein ◽  
Sebastian Voigt ◽  
Lars Stemmerik
Keyword(s):  
Natural History ◽  
North Africa ◽  
Morphological Difference ◽  
First Record ◽  
Lower Permian ◽  
Upper Carboniferous ◽  
History Museum ◽  
East Greenland ◽  
Continental Deposits ◽  
Significant Morphological Difference

A single slab with Late Palaeozoic tetrapod footprints from East Greenland has been housed at the Natural History Museum of Denmark for decades without scientific notice. The specimen comes from the Mesters Vig Formation of northern Scoresby Land in East Greenland and contains a monospecific assemblage of tetrapod footprints that we assign to Limnopus Marsh 1894. As there is no significant morphological difference from other records of this ichnogenus from North America, Europe and North Africa, the described tetrapod footprints can be referred to eryopoid temnospondyl trackmakers. Limnopus is well-known from Upper Carboniferous and Lower Permian continental deposits of palaeoequatorial Pangea. Identification of Limnopus tracks is in agreement with the supposed Late Carboniferous age of the Mesters Vig Formation and thereby also the first evidence of Carboniferous tetrapods from Greenland.

A new faunistic component of the Lower Triassic Panchet Formation of India increases the continental non-archosauromorph neodiapsid record in the aftermath of the end-Permian mass extinction

2021 ◽  
pp. 1-11
Author(s):  
Martín D. Ezcurra ◽  
Saswati Bandyopadhyay ◽  
Kasturi Sen
Keyword(s):  
Mass Extinction ◽  
Lower Triassic ◽  
Maximum Height ◽  
Dorsal Margin ◽  
Early Triassic ◽  
Anterior Portion ◽  
Continental Deposits ◽  
Biotic Recovery ◽  
Patterns And Processes ◽  
Permian Mass Extinction

Abstract The fossil record of Early Triassic diapsids is very important to understand how the end-Permian mass extinction affected ecosystems and the patterns and processes involved in the subsequent biotic recovery. Vertebrate fossil assemblages of continental deposits in current-day South Africa, China, and Russia are the best source of information of this clade during the aftermath of the extinction event. Although considerably less sampled, the Induan continental rocks of the Panchet Formation of the Damodar Basin (eastern India) have also yielded a relatively diverse vertebrate assemblage composed of fishes, temnospondyls, synapsids, and a single proterosuchid taxon. Here, we report on a small isolated diapsid partial ilium (ISIR 1132) from the upper Panchet Formation. This specimen has a distinct morphology compared to other tetrapods that we know, including a shallow emargination on the dorsal margin of the anterior portion of the iliac blade, and ratio between height of iliac blade versus maximum height of iliac acetabulum at level of the dorsalmost extension of supraacetabular crest ≤0.45. Comparisons and a quantitative phylogenetic analysis found ISIR 1132 as a non-archosauromorph neodiapsid. This new specimen expands the reptile diversity in the Panchet Formation as well as for the rest of Gondwana, where Early Triassic non-archosauromorph neodiapsid species are extremely scarce.

Sur l'anatomie et les affinites du Dadoxylon (Araucarioxylon) sahariense nov. sp., bois fossile du Continental intercalaire de l'Emi-Fezzan

1956 ◽  
Vol S6-VI (1-3) ◽  
pp. 227-236 ◽  
Author(s):  
Marie Veillet-Bartoszewska
Keyword(s):  
New Species ◽  
Fossil Wood ◽  
Continental Intercalaire ◽  
Continental Deposits ◽  
Identification Of Species ◽  
A New Species

Abstract Describes a new species of fossil wood--Dadoxylon (Araucarioxylon) sahariense--from continental deposits of the Emi-Fezzan region (Libia) in the Sahara. The new species is compared with other African Mesozoic Araucariaceae, and a key to the identification of species is presented.

scholarly journals Late Miocene (Early Turolian) vertebrate faunas and associated biotic record of the Northern Caucasus: Geology, palaeoenvironment, biochronology

2017 ◽  
Vol 73 (3-4) ◽  
pp. 383-444 ◽  
Author(s):  
Alexey S. Tesakov ◽  
Vadim V. Titov ◽  
Alexandra N. Simakova ◽  
Pavel D. Frolov ◽  
Elena V. Syromyatnikova ◽  
...  
Keyword(s):  
Fresh Water ◽  
Late Miocene ◽  
Northern Caucasus ◽  
Mean Annual Precipitation ◽  
Subtropical Climate ◽  
North Caucasus ◽  
Continental Deposits ◽  
Normal Polarity ◽  
Age Range ◽  
The City

Abstract Late Miocene continental deposits overlying the Khersonian marine sediments near the city of Maikop bordering the Belaya River (North Caucasus) yielded a diverse biotic record including palynology, ostracods, fresh-water and terrestrial molluscs, fishes, amphibians and reptiles, birds, and mammals. The obtained data indicate predominantly wooded landscapes along the banks of a large fresh-water estuarine or lagoonal basin with occasional connection with the sea. The basin existed in a warm temperate to subtropical climate with a high humidity and an estimated mean annual precipitation above 800 mm. The mammalian assemblage with Hipparion spp., Alilepus sp., Paraglirulus schultzi, Eozapus intermedius, Parapodemus lugdunensis, Collimys caucasicus sp. nov., Neocricetodon cf. progressus, etc. is referable to the early Turolian, MN 11. The data regarding composition and stage of evolution of the small mammal content combined with mostly normal polarity of the fossiliferous deposits, and the age estimates of the upper Khersonian boundary as between 8.6 and 7.9 Ma indicate a plausible correlation with Chron C4n and an age range between 8.1–7.6 Ma.

Sign in / Sign up

Export Citation Format

Share Document