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2023 In Reptile Paleontology
This list of fossil reptiles described in 2023 is a list of new taxa of fossil reptiles that were described during the year 2023, as well as other significant discoveries and events related to reptile paleontology that occurred in 2023. Squamates Squamate research * Redescription of '' Palaeogekko risgoviensis'' is published by Villa (2023), who confirms the validity of this species as a distinct taxon, and interprets it as a non- eublepharid gekkonoid of uncertain affinities. * LeBlanc ''et al.'' (2023) report that tooth replacement in extant snakes occurs by resorption of dentine by odontoclasts from within the pulp of the tooth, and that this mechanism was already present in ''Yurlunggur'' and '' Portugalophis''. * Shi ''et al.'' (2023) describe an assemblage of early Pliocene snake fossils entombed with the mammalian fauna from Houxushan (Queshan, Henan, China), and interpret the studied fossils as indicative of a warmer and more humid climate in this region during the early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the abs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luopingosaurus
''Luopingosaurus'' (meaning "Luoping lizard") is an extinct genus of pachypleurosaurid sauropterygian from the Middle Triassic Guanling Formation of Yunnan Province, China. The genus contains a single species, ''L. imparilis'', known from a well-preserved, nearly complete skeleton. Discovery and naming The ''Luopingosaurus'' holotype specimen, IVPP V19049, was discovered in sediments of the Guanling Formation, dated to the Anisian age (Pelsonian substage) of the middle Triassic period, in Luoping County, Yunnan Province, China. This specimen consists of a nearly complete, ventrally-exposed, articulated individual, lacking only the end of the tail. The preserved portion of the skeleton measures long. In 2023, Xu ''et al''. described ''Luopingosaurus imparilis'', a new genus and species of pachypleurosaurid, based on these fossil remains. The generic name, "''Luopingosaurus''", combines a reference to the type locality in Luoping County with the Greek word "saurus", meaning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portugal
Portugal, officially the Portuguese Republic, In recognized minority languages of Portugal: :* mwl, República Pertuesa is a country located on the Iberian Peninsula, in Southwestern Europe, and whose territory also includes the Macaronesian archipelagos of the Azores and Madeira. It features the westernmost point in continental Europe, its mainland west and south border with the North Atlantic Ocean and in the north and east, the Portugal-Spain border, constitutes the longest uninterrupted border-line in the European Union. Its archipelagos form two autonomous regions with their own regional governments. On the mainland, Alentejo region occupies the biggest area but is one of the least densely populated regions of Europe. Lisbon is the capital and largest city by population, being also the main spot for tourists alongside Porto, the Algarve and Madeira. One of the oldest countries in Europe, its territory has been continuously settled and fought over since prehistoric tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tithonian
In the geological timescale, the Tithonian is the latest age of the Late Jurassic Epoch and the uppermost stage of the Upper Jurassic Series. It spans the time between 152.1 ± 4 Ma and 145.0 ± 4 Ma (million years ago). It is preceded by the Kimmeridgian and followed by the Berriasian (part of the Cretaceous).See for a detailed version of the geologic timescale Gradstein ''et al.'' (2004) Stratigraphic definitions The Tithonian was introduced in scientific literature by German stratigrapher Albert Oppel in 1865. The name Tithonian is unusual in geological stage names because it is derived from Greek mythology. Tithonus was the son of Laomedon of Troy and fell in love with Eos, the Greek goddess of dawn. His name was chosen by Albert Oppel for this stratigraphical stage because the Tithonian finds itself hand in hand with the dawn of the Cretaceous. The base of the Tithonian stage is at the base of the ammonite biozone of '' Hybonoticeras hybonotum''. A global refer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hylaeochelys
''Hylaeochelys'' is an extinct genus of plesiochelyid turtle that lived during the Late Jurassic-Early Cretaceous in Portugal, Spain, France, and southern England. The type species was originally named by Richard Owen as ''Pleurosternon latiscutatum'' in 1853, before being moved to the new genus ''Hylaeochelys'' by Richard Lydekker in 1889. Other species included in the genus are ''H. belli'', ''H. kappa''A. Pérez-García and F. Ortega. 2014. A new species of the turtle Hylaeochelys (Eucryptodira) outside its known geographic and stratigraphic ranges of distribution. Comptes Rendus Palevol 13(3):183-188 and ''H. lata'', originally named under different genera by Gideon Mantell and Owen, respectively. All species are represented by carapaces, primarily from the Lulworth Formation of the Purbeck Limestone Group that was deposited during the Berriasian In the geological timescale, the Berriasian is an age/ stage of the Early/Lower Cretaceous. It is the oldest subdivision in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helochelydridae
The Helochelydridae are an extinct family of stem-turtles known from fossils found in North America and Europe spanning the Early to Late Cretaceous. Description The skull, shell and osteoderms of helochelydrids are covered in small, cylindrical protuberances, which are a distinctive characteristic of the group. They are thought to be terrestrial, based on the presence of limb osteoderms and bone histology. Their skull morphology is dissimilar to that of extant tortoises, suggesting an omnivorous habit similar to that of box turtles. Taxonomy Helochelydridae includes all turtles that closely related to '' Helochelydra'' than '' Sichuanchelys'', '' Meiolania'', or extant turtles. Although referred to as Solemydidae in recent literature on extinct turtles, Helochelydridae has priority over Solemydidae. They are placed as part of the clade Perichelydia. Some recent studies have recovered them as paracryptodires, though other studies have found them to be more basal than parac ... [...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 col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solemys
''Solemys'' is an extinct genus of stem turtle known from the Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', ... (late Campanian-early Maastrichtian) of southern France and eastern Spain. Taxonomy Two species are known, the type species ''Solemys gaudryi'' (Matheron, 1869) and ''S. vermiculata'' de Lapparent de Broin and Murelaga, 1996. The former was originally assigned to the Cenozoic turtle genus ''Apholidemys'' by Matheron (1869), but de Lapparent de Broin and Murelaga (1996) recognized it as a stem turtle distinct from ''Apholidemys'' and renamed it ''Solemys''.F. d.e. Lapparent de Broin and X. Murelaga. 1996. Une nouvelle faune de chéloniens dans le Crétacé supérieur européen. Comptes Rendus de l’Académie des Sciences de Paris 323:729-735 References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrochelys
''Astrochelys'' is a genus of tortoises in the family Testudinidae. The two species are both found in Madagascar, and both classified as critically endangered on the IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol .... Species References ;Bibliography * {{Taxonbar, from=Q779267 Turtles of Africa Reptiles of Madagascar Endemic fauna of Madagascar Turtle genera Taxa named by John Edward Gray ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrochelys Rogerbouri
''Astrochelys rogerbouri'' is an extinct tortoise species in the family Testudinidae which formerly lived in Madagascar. Discovery and naming The type specimen, MNHN.F.MAD480, is a nearly complete tibia and was collected in June 1900 in Ambolisatra, Madagascar by Guillaume Grandidier. It is kept at the Muséum national d’histoire naturelle. This material was originally assigned as a juvenile specimen of '' Aldabrachelys abrupta'', likely as the two share a type locality, and it was only found to represent a new species after DNA analysis. The specific name honors Roger Bour, a herpetologist and expert on western Indian Ocean giant tortoises who helped in the investigation describing this species. Description ''Astrochelys rogerbouri'' was a large tortoise species, with an estimated straight carapace length of 50 cm. This matches the size of its congeneric relative, the angonoka tortoise, which has a maximum straight carapace length of 51.9 cm. Though it is only known f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luopingosaurus Holotype
''Luopingosaurus'' (meaning "Luoping lizard") is an extinct genus of pachypleurosaurid sauropterygian from the Middle Triassic Guanling Formation of Yunnan Province, China. The genus contains a single species, ''L. imparilis'', known from a well-preserved, nearly complete skeleton. Discovery and naming The ''Luopingosaurus'' holotype specimen, IVPP V19049, was discovered in sediments of the Guanling Formation, dated to the Anisian age (Pelsonian substage) of the middle Triassic period, in Luoping County, Yunnan Province, China. This specimen consists of a nearly complete, ventrally-exposed, articulated individual, lacking only the end of the tail. The preserved portion of the skeleton measures long. In 2023, Xu ''et al''. described ''Luopingosaurus imparilis'', a new genus and species of pachypleurosaurid, based on these fossil remains. The generic name, "''Luopingosaurus''", combines a reference to the type locality in Luoping County with the Greek word "saurus", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
