| Cabindachelys Temporal range: Late Paleocene | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Testudines |
| Suborder: | Cryptodira |
| Clade: | Pancheloniidae |
| Genus: | † Cabindachelys Myers et al., 2017 [1] |
| Species | |
| |
Cabindachelys is a genus of extinct sea turtles. The only known species is Cabindachelys landanensis. [1]
A partial skull of the Cabindachelys has been found in Cabinda, Angola, by Timothy S. Myers, Michael J. Polcyn, Octávio Mateus, Diana P. Vineyard, A. O. Gonçalves, Louis L. Jacobs. [2]
Cabindachelys lived in deep subtidal indents of the shores of Cabinda, Angola. [3] [1] [4]
The name of Cabindachelys is a mixture of Cabinda the place where it lived and the Greek name for turtle. [2]
| Panchelonioidea |
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Cabinda is an exclave and province of Angola, a status that has been disputed by several political organizations in the territory. The capital city is also called Cabinda, known locally as Tchiowa, Tsiowa or Kiowa. The province is divided into four municipalities—Belize, Buco-Zau, Cabinda and Cacongo.
Cheloniidae is a family of typically large marine turtles that are characterised by their common traits such as, having a flat streamlined wide and rounded shell and almost paddle-like flippers for their forelimbs. The six species that make up this family are: the green sea turtle, loggerhead sea turtle, olive ridley sea turtle, hawksbill sea turtle, flatback sea turtle and the Kemp's ridley sea turtle.
Bengo is a province of Angola. Its capital is Caxito. It has an area of 31,371 square kilometres, and its population at the 2014 Census was 356,641. The province had been created in 1980 by dividing the original province Luanda into Bengo and the then smaller province Luanda.
A bone bed is any geological stratum or deposit that contains bones of whatever kind. Inevitably, such deposits are sedimentary in nature. Not a formal term, it tends to be used more to describe especially dense collections such as Lagerstätte. It is also applied to brecciated and stalagmitic deposits on the floor of caves, which frequently contain osseous remains.
Ptolemaiida is a taxon of wolf-sized afrothere mammals that lived in northern and eastern Africa during the Paleogene. The oldest fossils are from the latest Eocene strata of the Jebel Qatrani Formation, near the Fayum oasis in Egypt. A tooth is known from an Oligocene-aged stratum in Angola, and Miocene specimens are known from Kenya and Uganda
Liodon is a dubious genus of mosasaur from the Late Cretaceous. Remains assigned to this genus have been found in Africa, Asia, Europe, North and South America, and New Zealand. Though dubious and of uncertain phylogenetic affinities, Liodon was historically a highly important taxon in mosasaur systematics, being one of the genera on which the family Mosasauridae was based.
Euclastes is an extinct genus of sea turtles that survived the Cretaceous–Paleogene mass extinction. The genus was first named by Edward Drinker Cope in 1867, and contains three species. E. hutchisoni, was named in 2003 but has since been reassigned to the genus Pacifichelys, while E. coahuilaensis named in 2009 was reassigned as Mexichelys coahuilaensis in 2010.
Terminonaris is a genus of extinct pholidosaurid crocodyliforms that lived during the Late Cretaceous epoch. The name means: “enlarged snout or nose” at the front of the skull. Terminonaris is an early crocodile, within a subgroup called Mesoeucrocodylia. Its remains have only been found in North America and Europe. Originally known under the generic name Teleorhinus, it was once believed to be a teleosaurid. Both prehistoric crocodiles such as Terminonaris, as well as modern crocodiles, belong to the same group called crocodyliformes, although modern crocodiles have specific features that indicate they are distant relatives of this species and members of the subgroup Eusuchia.
Cacongo is a municipality in Cabinda Province, an exclave of Angola. Its principal town is Cacongo. Landana lies on the coast of the Atlantic Ocean, adjacent to Landana Bay. The municipality covers 1,679 square kilometres (648 sq mi) and had a population of 39,076 at the 2014 Census; the latest official estimate is 44,974.
Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 2009.
Pholidosauridae is an extinct family of aquatic neosuchian mesoeucrocodylian crocodylomorphs. Fossils have been found in Europe, Africa, North America and South America. The pholidosaurids first appeared in the fossil record during the Bathonian stage of the Middle Jurassic. Jouve & Jalil (2020) described postcranial material of a pholidosaurid from the Paleocene (Danian) of Ouled Abdoun Basin (Morocco), representing the most recent record of the family. The authors also reinterpreted putative Maastrichtian dyrosaurid Sabinosuchus as a pholidosaurid, and argued that at least two independent pholidosaurid lineages reached the Maastrichtian, among which one survived the Cretaceous–Paleogene extinction event. Before the publication of this study it was thought that the family became extinct during the Late Turonian stage of the Late Cretaceous.
Crocodyliformes is a clade of crurotarsan archosaurs, the group often traditionally referred to as "crocodilians". They are the first members of Crocodylomorpha to possess many of the features that define later relatives.
Angolachelys is an extinct genus of African eucryptodiran turtle which existed in Angola during the Turonian stage of the Late Cretaceous. The type species is Angolachelys mbaxi. The type MGUAN-PA includes skull, jaw, and postcranial fragments found in the Tadi Beds of the Itombe Formation.
Angolatitan is a genus of sauropod dinosaur from the Upper Cretaceous and the first non-avian dinosaur discovered in Angola. Based on a forelimb, it was described in 2011 by Octávio Mateus and colleagues. The only species is Angolatitan adamastor. Angolatitan was a relict form of its time, being a basal titanosauriform sauropod in the Late Cretaceous, when more derived titanosaurs were far more common.
The geology of Angola includes large areas of Precambrian age rocks. The west of the country is characterized by meta-sedimentary rocks of Proterozoic age including tillites assigned to the Bembe System. Overlying these are a thick pile of limestones and other marine sediments laid down during the Mesozoic and Cenozoic eras. Amidst the Proterozoic sequence are areas of crystalline basement dating from the Archaean. More Archaean basement rocks form the Kasai Craton in northeastern Angola. In the north, within the Cassanje Graben are clastic sediments and volcanic rocks of the Karoo Supergroup. Kimberlites and carbonatites resulting from magmatic activity during the Karoo period are found along a northeast-southwest line through the country. Continental sediments of the Kalahari Group are widespread in eastern Angola.
The Bentiaba is a river in southern Angola. Its mouth is at the Atlantic Ocean near the commune of Bentiaba in Namibe Province.
Cardiocorax is an extinct genus of elasmosaurid known from the Late Cretaceous Mocuio Formation of Namibe Province, southern Angola. It contains a single species, Cardiocorax mukulu.
The Itombe Formation is a geological formation of the Kwanza Basin in Angola dating back to the Coniacian stage of the Late Cretaceous. The environment of deposition is shallow marine. Reptile fossils have been recovered from the Tadi beds locality within the formation, including the dinosaur Angolatitan, the mosasaurs Angolasaurus and Mosasaurus iembeensis and the turtle Angolachelys.The Itombe formation was formerly considered Turonian in age, but new data suggests to be Coniacian.
Angolachelonia is a clade of extinct turtles from the Late Jurassic to Paleogene of Eurasia. The group is defined as all taxa derived from the ancestor of the type genus Angolachelys and Solnhofia, a definition that could potentially encompass a clade of entirely marine turtles. Angolachelonia was originally inclusive of only Solnhofia, Angolachelys and Sandownia when originally concevied by Octavio Mateus and colleagues in 2009, but later phylogenetic analyses by Serjocha Evers and Roger Benson in 2018 unites the family Sandownidae, including Angolachelys and Sandownia among other taxa, with the entirely Late Jurassic clade Thalassochelydia, where Solnhofia may be a basal member. While the placement of Solnhofia is weak and the clade that Angolachelonia represents may change with further analysis, the clade of Sandownidae and Thalassochelydia is well-supported, and does not collapse despite the uncertain evolutionary history of the group. Three alternative potential origins of Angolachelonia sensu Evers and Benson are shown below.
Cheloniidae family | ||||
|---|---|---|---|---|
| ||||
| Genera |
|  | ||
| † Allopleuron | ||||
| † Argillochelys | ||||
| Caretta | ||||
| † Carolinochelys | ||||
| Chelonia | ||||
| † Eochelone | ||||
| Eretmochelys | ||||
| † Gigantatypus | ||||
| † Glarichelys | ||||
| † Itilochelys | ||||
| Lepidochelys | ||||
| †Mexichelys | ||||
| †Miocaretta | ||||
| Natator | ||||
| † Pacifichelys | ||||
| † Syllomus | ||||
| † Tasbacka | ||||
Phylogenetic arrangement of turtles based on turtles of the world 2017 update: Annotated checklist and atlas of taxonomy, synonymy, distribution, and conservation status. †=Extinct. | ||||
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