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Paulchoffatiidae
Paulchoffatiidae is a family of extinct mammals that lived predominantly during the Upper Jurassic period, though a couple of genera are known from the Early Cretaceous. Fossils have been reported from Europe (Portugal, Spain, Germany and England) . Paulchoffatiids were members of the order Multituberculata. They were relatively early representatives and are within the informal suborder of "Plagiaulacida". The family was named by G. Hahn in 1969, and it honors the Portuguese geologist Léon Paul Choffat. Two subfamilies are recognized. The most productive fossil site for Paulchoffatiids has been Guimarota, Portugal. Remains from this locality are generally diagnosed on the basis of lower or upper jaws. In only one instance, that of ''Kuehneodon'', has it been possible to match the two up. Some of the lower jaws probably represent the same animals as some of the upper, so the diversity of Paulchoffatiids is very possibly exaggerated. As the site is now a flooded, disused coalmine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathmochoffatia
''Bathmochoffatia'' is an extinct mammal of the Upper Jurassic. It was a relatively early member of the also extinct order Multituberculata. It lived in Portugal at about the same time as the far more famous dinosaur, Allosaurus. It is in the suborder "Plagiaulacida", family Paulchoffatiidae. The genus ''Bathmochoffatia'' (basal choffatia) was named by Hahn G. and Hahn R. in 1998. The primary species, ''Bathmochoffatia hapax'', was also named by Hahn and Hahn. Fossil remains were found in strata dating to the Kimmeridgian (Upper Jurassic) of Guimarota, Portugal. Remains consist of a solitary molar and one cheek tooth. References * Hahn & Hahn 1998), "Neue Beobachtungen an Plagiaulacoidea (Multituberculata) des Ober-Jura". 3. Der Bau der Molaren bei den Paulchoffatiidae. Berliner Geowissenschaftliche Abhandlungen, E, 28, p. 39-84. ''(New observations on Plagiaulacoidea (Multituberculata Multituberculata (commonly known as multituberculates, named for the multiple tuberc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kielanodon
''Kielanodon'' is an extinct mammal of the Portuguese Upper Jurassic. It was a relatively early member of the also extinct order of Multituberculata. It eked out a living during the Mesozoic era, also known as the "Age of the Dinosaurs." It is in the suborder Plagiaulacida, family Paulchoffatiidae. The genus ''Kielanodon'', meaning "Kielan’s tooth" after Zofia Kielan-Jaworowska, was named by Hahn G. in 1987. The main species, ''Kielanodon hopsoni'', also named by Hahn, is known from fossils found in the Kimmeridgian (Upper Jurassic)-age strata of Guimarota, Portugal. The identification is based on three upper jaws. References * Hahn (1987), ''Neue Beobachtungen zum Schädel- und Gebiss-Bau der Paulchoffatiidae (Multituberculata, Ober-Jura)''. Paleovertebrata 17 p. 155-196, 5 plates. ''(New observations on the skull and jaw constructions in Paulchoffatiidae (Multituberculata Multituberculata (commonly known as multituberculates, named for the multiple tubercles of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plesiochoffatia
''Plesiochoffatia'' is an extinct mammal of the Upper Jurassic. It was a relatively early member of the also extinct order Multituberculata. It was a resident of Portugal during the "age of the dinosaurs." It's in the suborder "Plagiaulacida" and family Paulchoffatiidae. The genus ''Plesiochoffatia'' ("near Choffatia") was named by Hahn G. and Hahn R. in 1999. It has also been known as ''Parachoffatia'' ("beside Choffatia") Hahn & Hahn, 1998 (preoccupied). Remains have been found in the Kimmeridgian (Upper Jurassic)-age strata of Guimarota, Portugal. Three species were described in the same study under the name of ''Parachoffatia''; (''P. peparethos'', ''P. staphylos'' and ''P. thoas''). As something else had already been given that name, the genus was renamed a year later. References * Hahn & Hahn (1999), Nomenklatorische Notiz: Namens-Änderung bei Multituberculata (Mammalia). Geologica et Palaeontologica, 33, p. 156. ''(Nomenclatural Note: A name change within Multi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenachoffatia
''Xenachoffatia'' is a small Jurassic mammal from Portugal. It was a relatively early member of the also extinct order of Multituberculata. It lived during "the age of the dinosaurs" and belongs to the suborder Plagiaulacida, family Paulchoffatiidae. The genus ''Xenachoffatia'' ("for Xena Choffat") was named by Hahn G. and Hahn R. in 1998. The primary species ''Xenachoffatia oinopion'' (Hahn & Hahn, 1998) was found in Kimmeridgian (Upper Jurassic) Camadas de Guimarota of Guimarota, Portugal. The classification is based on three upper molars The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name ''molar'' derives from Latin, ''molaris dens'', meaning "millstone to .... References * Hahn & Hahn (1998), "Neue Beobachtungen an Plagiaulacoidea (Multituberculata) des Ober-Juras. 3. Der Bau der Molaren bei den Paulchoffatiidae." ''(New observations on the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plagiaulacida
Plagiaulacida is a group of extinct multituberculate mammals. Multituberculates were among the most common mammals of the Mesozoic, "the age of the dinosaurs". Plagiaulacids are a paraphyletic grouping, containing all multituberculates that lie outside of the advanced group Cimolodonta. They ranged from the Middle Jurassic Period to the early Late Cretaceous of the northern hemisphere. During the Cenomanian, they were replaced by the more advanced cimolodontans. Kielan-Jaworowska and Hurum (2001) divides “Plagiaulacida” into three informal lineages, the paulchoffatiids, the plagiaulicids, and the allodontids. Allodontid line The Allodontid line may be a superfamily, Allodontoidea. Both allodontids and paulchoffatiids (below) were among the most basal of the plagiaulacids. The Allodontid line contains: The family Allodontidae is known from two genera from the Upper Jurassic Morrison Formation of North America. The family Zofiabaataridae contains a single genus, '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meketibolodon
''Meketibolodon'' is a genus of extinct mammal from the Kimmeridgian (Upper Jurassic) Camadas de Guimarota of Guimarota, Portugal. It was a relatively early member of the also extinct order Multituberculata, suborder Plagiaulacida, family Paulchoffatiidae. The genus was named by Hahn G. in 1993 based on nine specimens of lower jaw. "''Meketibolodon'' (Hahn 1993) is distinguished from the other genera f Paulchoffatiidaeby two characters: the tooth row is significantly convexly curved upwards, and the corpus mandibulae has angled margins ventrally (Hahn and Hahn 1998b). The incisor is more strongly curved than it is the case in ''Paulchoffatia ''Paulchoffatia'' is a genus of extinct mammal of the Upper Jurassic - Lower Cretaceous. It was a relatively early member of the also extinct order Multituberculata, within the suborder " Plagiaulacida" and family Paulchoffatiidae. It lived in ...'', and its root is longer. The corpus mandibulae is similarly massive to that in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meketichoffatia
''Meketichoffatia'' was a small mammal from the Upper Jurassic of Portugal. It was a relatively early member of the extinct order Multituberculata. It lived at the same time as dinosaurs such as Allosaurus. It's within the suborder " Plagiaulacida" and family Paulchoffatiidae Paulchoffatiidae is a family of extinct mammals that lived predominantly during the Upper Jurassic period, though a couple of genera are known from the Early Cretaceous. Fossils have been reported from Europe (Portugal, Spain, Germany and England .... The genus ''Meketichoffatia'' was named by Hahn G. in 1993 based on a single species. Fossil remains of the species ''Meketichoffatia krausei'' consisting of two upper jaws were found in Kimmeridgian (Upper Jurassic)-age Camadas de Guimarota of Guimarota, Portugal. References * Hahn (1993), "The systematic arrangement of the Paulchoffatiidae (Multituberculata) revisited". ''Geol. Paleontol.'' 27, p. 201-214. * Hahn G & Hahn R (2000), "Multitu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuehneodon
''Kuehneodon'' is a genus of extinct mammal of the Upper Jurassic - Lower Cretaceous of Europe. It was a relatively early member of the also extinct order (biology), order of Multituberculata. Members of this genus lived alongside such dinosaurs as Allosaurus. It belongs to the suborder "Plagiaulacida", family Paulchoffatiidae. In addition, this genus is the only known member of a subfamily called Kuehneodontinae. It was named by Hahn G. in 1969, the name meaning "Kühne’s tooth" in honor of paleontologist Walter Georg Kühne, Walther Kühne, pioneer of the Guimarota site of Portugal where remains were found in the late 1950s and early 1960s. ''Kuehneodon'' is the one genus of the taxon Paulchoffatiidae from the Guimarota site whereby the lower and upper jaws have been found united. These "exhibit the lowest number of derived characters (apomorphies), and are thus closest to the main evolutionary lineage of the multituberculates" (Hahn & Hahn 2000, p. 106). The genus is ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multituberculata
Multituberculata (commonly known as multituberculates, named for the multiple tubercles of their teeth) is an extinct order of rodent-like mammals with a fossil record spanning over 130 million years. They first appeared in the Middle Jurassic, and reached a peak diversity during the Late Cretaceous and Paleocene. They eventually declined from the mid Paleocene onwards, disappearing from the known fossil record in the late Eocene. They are the most diverse order of Mesozoic mammals with more than 200 species known, ranging from mouse-sized to beaver-sized. These species occupied a diversity of ecological niches, ranging from burrow-dwelling to squirrel-like arborealism to jerboa-like hoppers. Multituberculates are usually placed as crown mammals outside either of the two main groups of living mammals—Theria, including placentals and marsupials, and MonotremataAgustí-Antón 2002, pp 3-4—but usually as closer to Theria than to monotremes. They are considered to be clos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paulchoffatia
''Paulchoffatia'' is a genus of extinct mammal of the Upper Jurassic - Lower Cretaceous. It was a relatively early member of the also extinct order Multituberculata, within the suborder " Plagiaulacida" and family Paulchoffatiidae. It lived in Europe during the "age of the dinosaurs." The genus ''Paulchoffatia'' ("for Paul Choffat") was named by Kühne W.G. in 1961 based on a single species. It is also known as ''Paulchoffia''. ''Paulchoffatia'' is characterized by a massive Corpus mandibulae (the part of the jaw below the tooth row), a rounded lower margin of the jaw and a massive, only slightly curved and steeply inclined incisor with a short root", (Hahn & Hahn 2000, p. 105). The name honours the geologist Paul Choffat (1849–1919). Remains of the species ''Paulchoffatia delgadoi'' were found in the Kimmeridgian (Upper Jurassic)-age strata In geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudobolodon Krebsi
''Pseudobolodon'' was a relatively early member of the also extinct order of mammals, Multituberculata. It lived in Portugal during the Upper Jurassic, part of the "age of the dinosaurs." It lies within the suborder "Plagiaulacida" and family Paulchoffatiidae. The genus ''Pseudobolodon'' ("false Bolodon") was named by Hahn G. in 1977 based on two species. A third one-time species, ''P. robustus'' (Hahn, 1978), seems to have transformed into '' Meketibolodon robustus'' (Hahn G. 1978). The species ''Pseudobolodon krebsi'' was named by Hahn G. & Hahn R. in 1994. Fossil remains consisting of two upper jaws have been found in the Kimmeridgian (Upper Jurassic)-age strata of Guimarota, Portugal. As for the septomaxilla mentioned in the title of the reference: "A small, triangular bone is placed between the premaxilla and the maxilla; this bone is interpreted as a septomaxilla. This is a bone that is typical for lower tetrapods (amphibians, reptiles), but is usually absent in mammals" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
