|
Azilal Group
The Azilal Formation (historically Toundute Continental Series and Wazzant Formation)Known wholly in the past by the current sub-unit terms ''Toundute Continental Series'' and ''The Wazzant Formation'' is a geological unit in the Azilal and Ouarzazate provinces of the High Atlas mountains of Morocco. It covers the Latest Pliensbachian to early Aalenian stages of the Jurassic period. It is a terrestrial deposit that overlies marine dolomites of equivalent age to the Budoš Limestone of Montenegro or the Marne di Monte Serrone of Italy. Dinosaur remains, such as the sauropod ''Tazoudasaurus'' and the basal ceratosaur '' Berberosaurus'' are known from the unit, along with several undescribed genera. The units in the group have been considered individual in the past, a division of the so-called "couches rouges" (red layers), and subdivided by a supposed geological scale. The strata of the group extend toward the Central High Atlas, covering different anticlines and topographic accid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliensbachian
The Pliensbachian is an age of the geologic timescale and stage in the stratigraphic column. It is part of the Early or Lower Jurassic Epoch or Series and spans the time between 190.8 ± 1.5 Ma and 182.7 ± 1.5 Ma (million years ago). The Pliensbachian is preceded by the Sinemurian and followed by the Toarcian. The Pliensbachian ended with the extinction event called the Toarcian turnover. During the Pliensbachian, the middle part of the Lias was deposited in Europe. The Pliensbachian is roughly coeval with the Charmouthian regional stage of North America. Stratigraphic definitions The Pliensbachian takes its name from the hamlet of Pliensbach in the community of Zell unter Aichelberg in the Swabian Alb, some 30 km east of Stuttgart in Germany. The name was introduced into scientific literature by German palaeontologist Albert Oppel in 1858. The base of the Pliensbachian is at the first appearances of the ammonite species '' Bifericeras donovani'' and genera ''Apoderocer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Unit
A stratigraphic unit is a volume of rock of identifiable origin and relative age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize it. Units must be ''mappable'' and ''distinct'' from one another, but the contact need not be particularly distinct. For instance, a unit may be defined by terms such as "when the sandstone component exceeds 75%". Lithostratigraphic units Sequences of sedimentary and volcanic rocks are subdivided the basis of their shared or associated lithology. Formally identified lithostratigraphic units are structured in a hierarchy of lithostratigraphic rank, higher rank units generally comprising two or more units of lower rank. Going from smaller to larger in rank, the main lithostratigraphic ranks are Bed, Member, Formation, Group and Supergroup. Formal names of lithostratigraphic units are assigned by geological surveys. Units of formation or hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anticline
In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the location where the curvature is greatest, and the limbs are the sides of the fold that dip away from the hinge. Anticlines can be recognized and differentiated from antiforms by a sequence of rock layers that become progressively older toward the center of the fold. Therefore, if age relationships between various rock strata are unknown, the term antiform should be used. The progressing age of the rock strata towards the core and uplifted center, are the trademark indications for evidence of anticlines on a geologic map. These formations occur because anticlinal ridges typically develop above thrust faults during crustal deformations. The uplifted core of the fold causes compression of strata that preferentially erodes to a deeper st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berberosaurus
''Berberosaurus'' (meaning " Berber lizard", in reference to the Berbers of Morocco) is a genus of neotheropod dinosaur, possibly a ceratosaur, from the Early Toarcian-age (Lower Jurassic) Azilal Formation found in the High Atlas of Toundoute, Ouarzazate, Morocco. The type species of the genus ''Berberosaurus'' is ''B. liassicus'', in reference to the Lias epoch. ''Berberosaurus'' might be the oldest known ceratosaur, and is based on partial postcranial remains. Classification Ronan Allain and colleagues, who described ''Berberosaurus'', performed a phylogenetic analysis and found their new genus to be the most basal known abelisauroid, more derived than ''Elaphrosaurus'', ''Ceratosaurus'', and ''Spinostropheus'', but less so than ''Xenotarsosaurus'' and abelisaurians. ''Berberosaurus'' is distinguished from other theropods by anatomical details found in its vertebrae, metacarpals, and hindlimb bones. Its assignment as an abelisauroid pushes back the record of this group and sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceratosaurus
''Ceratosaurus'' (from Ancient Greek, Greek κέρας/κέρατος, ' meaning "horn" and wikt:σαῦρος, σαῦρος ' meaning "lizard") was a carnivorous Theropoda, theropod dinosaur in the Late Jurassic Period (geology), period (Kimmeridgian to Tithonian). The genus (biology), genus was first described in 1884 by American paleontologist Othniel Charles Marsh based on a nearly complete skeleton discovered in Garden Park, Colorado, in rocks belonging to the Morrison Formation. The type species is ''Ceratosaurus nasicornis''. The Garden Park specimen remains the most complete skeleton known from the genus, and only a handful of additional specimens have been described since. Two additional species, ''Ceratosaurus dentisulcatus'' and ''Ceratosaurus magnicornis'', were described in 2000 from two fragmentary skeletons from the Cleveland-Lloyd Dinosaur Quarry, Cleveland-Lloyd Quarry of Utah and from the vicinity of Fruita, Colorado. The Valid name (zoology), validity of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tazoudasaurus
''Tazoudasaurus'' is a genus of vulcanodontidae, vulcanodontid sauropod dinosaurs hailing from the Early Jurassic, located in the High Atlas Mountains of Morocco in North Africa. Along with ''Ohmdenosaurus'' is one of the two formally described sauropods from the Toarcian of the Northern Hemisphere. Discovery The remains, consisting of the holotype, a partial adult skeleton (specimen To 2000–1) and associated partial juvenile skeleton (specimen To 2000-2) found in continental detrital sediments of the Toarcian aged Azilal Formation, were discovered in the early 2000s and were described by Ronan Allain ''et al.'' in early 2004. The generic name derives from one of the localities, Tazouda, while the specific name (zoology), specific descriptor is a latinization of the Berber languages, Berber term for "slender" due to the animal's small size for a sauropod. Its fossil was found alongside that of ''Berberosaurus'' and an indeterminate large theropod. Description ''Tazoudasaurus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sauropoda
Sauropoda (), whose members are known as sauropods (; from '' sauro-'' + '' -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their body), and four thick, pillar-like legs. They are notable for the enormous sizes attained by some species, and the group includes the largest animals to have ever lived on land. Well-known genera include ''Brachiosaurus'', ''Diplodocus'', ''Apatosaurus'' and ''Brontosaurus''. The oldest known unequivocal sauropod dinosaurs are known from the Early Jurassic. ''Isanosaurus'' and ''Antetonitrus'' were originally described as Triassic sauropods, but their age, and in the case of ''Antetonitrus'' also its sauropod status, were subsequently questioned. Sauropod-like sauropodomorph tracks from the Fleming Fjord Formation (Greenland) might, however, indicate the occurrence of the group in the Late Triassic. By the Late Jurassic (150 million yea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marne Di Monte Serrone
The Marne di Monte Serrone ("Monte Serrone Marl") is a geological formation in Italy, dating to roughly between 181 and 178 million years ago,Baldanza, 1989Sabatino et al., 2009 and covering the early and middle Toarcian stage of the Jurassic Period of central Italy. It is the regional equivalent to the Toarcian units of Spain such as the Turmiel Formation, units in Montenegro, such as the Budoš Limestone and units like the Wazzant Formation and the Azilal Formation of Morocco.Monaco, 1994 Description The Marne di Monte Serrone was first defined by Pialli in 1969.Pialli, 1969 The formation is characterised for be one of the most complete sections of the Toarcian paleobiographical strata around Europe.Palliani & Mattioli, 1994 It is also one of the best places on southern Europe where the strata shows the effects of the Lower Toarcian anoxic event (TAE). The formation also provides data about the changes after the Toarcian AE, with changes on the deposited micritic limestone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montenegro
) , image_map = Europe-Montenegro.svg , map_caption = , image_map2 = , capital = Podgorica , coordinates = , largest_city = capital , official_languages = Montenegrin , languages2_type = Languages in official use , languages2 = , ethnic_groups = , ethnic_groups_year = 2011 , religion = , religion_year = 2011 , demonym = Montenegrin , government_type = Unitary parliamentary republic , leader_title1 = President , leader_name1 = Milo Đukanović , leader_title2 = Prime Minister , leader_name2 = Dritan Abazović (acting) , leader_title3 = Speaker , leader_name3 = Danijela Đurović , legislature = Skupština , sovereignty_type = Establishment history , established_event1 = Principality of Duklja , established_date1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Budoš Limestone
The Budoš Limestone ("Budos Mountain Limestone") is a geological formation in Montenegro, dating to 180 mya (unit), million years ago, and covering the Toarcian stage of the Jurassic Period. It has been considered an important setting in Balkan paleontology, as it represents a unique terrestrial setting with abundant plant material, one of the few know from the Toarcian of Europe. It is the regional equivalent to the Toarcian units of Spain such as the Turmiel Formation, units like the Azilal Formation of Morocco and others from the Mediterranean such as the Posidonia Beds of Greece and the Marne di Monte Serrone of Italy. In the Adriatic section, this unit is an equivalent of the Calcare di Sogno of north Italy, as well represents almost the same type of ecosystem recovered in the older (Pliensbachian) Rotzo Formation of the Venetian region, know also for its rich floral record. Description The Toarcian paleogeography of Montenegro was characterised by two major units, mostly f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
