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Krokolithidae
Krokolithidae is an oofamily of fossil crocodylomorph eggs. The oogenus ''Mycomorphoolithus ''Mycomorphoolithus'' (meaning "fungus-shaped stone egg") is an oogenus of fossil eggs found in Spain and England. They possibly represent eggshells of non-eusuchian crocodylomorphs, and are similar to, but not part of, the Krokolithidae.Miguel ...'' is closely related to the family, but not included in it. References Prehistoric crocodylomorphs Reptile trace fossils Egg fossils {{eggshell-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mycomorphoolithus
''Mycomorphoolithus'' (meaning "fungus-shaped stone egg") is an oogenus of fossil eggs found in Spain and England. They possibly represent eggshells of non-eusuchian crocodylomorphs, and are similar to, but not part of, the Krokolithidae.Miguel Moreno-Azanza, Jose Ignacio Canudo, and Jose Manuel Gasca. (2015) "Enigmatic Early Cretaceous ootaxa from Western Europe with signals of extrinsic eggshell degradation" ''Cretaceous Research'' 56: 617–627. Distribution ''M. kohringi'' is known from three formations in the Maestrazgo Basin in Spain: the El Castellar Formation, the Mirambel Formation, and the Blesa Formation, plus La Huergina and El Collado Formations in Spain, all of which are Barremian age. Also, eggshell fragments referred to ''Mycomorphoolithus'' sp. are known from the Purbeck Group in England, which is dated to the Berriasian. History ''Mycomorphoolithus'' were first discovered (though not yet named) in 1990 by German paleontologist Rolph Köhring, who believed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campanian
The Campanian is the fifth of six ages of the Late Cretaceous Epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series. Campanian spans the time from 83.6 (± 0.2) to 72.1 (± 0.2) million years ago. It is preceded by the Santonian and it is followed by the Maastrichtian. The Campanian was an age when a worldwide sea level rise covered many coastal areas. The morphology of some of these areas has been preserved: it is an unconformity beneath a cover of marine sedimentary rocks. Etymology The Campanian was introduced in scientific literature by Henri Coquand in 1857. It is named after the French village of Champagne in the department of Charente-Maritime. The original type locality was a series of outcrop near the village of Aubeterre-sur-Dronne in the same region. Definition The base of the Campanian Stage is defined as a place in the stratigraphic column wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krokolithes
''Krokolithes'' is an oogenus of Crocodiloid eggs. These eggs were laid by an extinct species of Crocodylian. It contains three oospecies: ''K. dinophilus'', ''K. wilsoni'' and ''K. helleri''. 1 Fossils of the oogenus have been found in the Oligocene of France, the Oldman and Dinosaur Park Formations of Alberta, Canada, the Campanian Two Medicine Formation of Montana, the Barremian Cabezo Gordo Member of the Blesa Formation of Spain, and the Kimmeridgian of the Lourinhã Formation The Lourinhã Formation () is a fossil rich geological formation in western Portugal, named for the municipality of Lourinhã. The formation is mostly Late Jurassic in age (Kimmeridgian/Tithonian), with the top of the formation extending into the ... of Portugal. References Egg fossils Tithonian life Barremian life Campanian life Maastrichtian life Oligocene life Fossils of France Fossils of Portugal Fossils of Spain Paleontology in Alberta Paleontology in Montana Fossil parataxa desc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bauruoolithus
''Bauruoolithus'' is an oogenus of fossilized eggs belonging to an extinct crocodyliform from the Late Cretaceous (late Campanian-early Maastrichtian) of Brazil. ''Bauruoolithus'' eggs were most likely laid by the notosuchian crocodyliform ''Baurusuchus''. Eggs of ''Bauruoolithus'' were described in 2011 from the Adamantina Formation. The type oospecies is ''B. fragilis''. Description ''Bauroolithus'' eggs are elongated, with a width measuring about half that of its height. The ends of the egg are blunt. At 0.15 to 0.25 millimeters in thickness, the shell is thin and somewhat wavy. The eggshell is divided into wedge-shaped shell units, which are pieces of calcareous aggregate. The surface of the shell is covered in small tear-shaped pores. Paleobiology ''Bauroolithus'' eggs belong to the crocodyloid basic egg type. Overall, their morphology is similar to that of the eggs of living crocodylia Crocodilia (or Crocodylia, both ) is an order of mostly large, predatory, semi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suchoolithus
''Suchoolithus'' is an oogenus (fossil egg genus) of crocodylomorph eggs from the late Jurassic of Portugal. They are notable for their small size, and for being among the oldest known crocodylomorph eggs. Description ''Suchoolithus'' is known from a single, well-preserved egg clutch of 13 eggs. The eggs have a blunt, ellipsoid shape, and are quite small (measuring only long by across). All but two of the eggs are arranged horizontally in the clutch. The eggshell is only 163 μm thick, and is sculpted with tiny, irregular bumps on its outer surface. Like other crocodylian eggs, its shell is composed of thousands of tiny calcium carbonate crystal units; in ''S. portucalensis'', these eggshell units are trapezoidal, tightly packed, and wider than they are tall. Russo ''et al.'' 2017 did not observe any pores openings on the eggshell's surface, though a possible pore canal was observed in one section of the shell. History Fossil crocodylian eggs are generally rare, though they ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cretaceous Research
''Cretaceous Research'' is a bimonthly peer-reviewed scientific journal published by Elsevier. The journal focuses on topics dealing with the Cretaceous period and the Cretaceous–Paleogene boundary. Abstracting and indexing The journal is abstracted and indexed in Scopus and the Web of Science. According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... of 2.176. References External links * Elsevier academic journals Paleontology journals Publications established in 1980 English-language journals Bimonthly journals {{Cretaceous-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Crocodylomorphs
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reptile Trace Fossils
Reptiles, as most commonly defined are the animals in the class Reptilia ( ), a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates (lizards and snakes) and rhynchocephalians (tuatara). As of March 2022, the Reptile Database includes about 11,700 species. In the traditional Linnaean classification system, birds are considered a separate class to reptiles. However, crocodilians are more closely related to birds than they are to other living reptiles, and so modern cladistic classification systems include birds within Reptilia, redefining the term as a clade. Other cladistic definitions abandon the term reptile altogether in favor of the clade Sauropsida, which refers to all amniotes more closely related to modern reptiles than to mammals. The study of the traditional reptile orders, historically combined with that of modern amphibians, is called herpetology. The earliest known proto-reptiles originated around 31 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
