Cretadhefdaa Temporal range: Cenomanian, | |
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Fossil material | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Amphibia |
Order: | Anura |
Suborder: | Neobatrachia |
Genus: | † Cretadhefdaa Lemierre & Blackburn, 2022 |
Species: | †C. taouzensis |
Binomial name | |
†Cretadhefdaa taouzensis Lemierre & Blackburn, 2022 | |
Cretadhefdaa is an extinct genus of frog from the Late Cretaceous (Cenomanian) Kem Kem Group of Morocco. It contains only the species C. taouzensis from the middle Cenomanian Douira Formation, known from some vertebrae and cranial elements. The genus name is a combination of Cretaceous and dhefdaa, the Arabic word for "frog", while the species name references the city of Taouz, near which it was discovered. [1]
Cretadhefdaa is a member of the modern frog group Neobatrachia, making it the oldest known neobatrachian outside of South America, and the second neobatrachian known from the Mesozoic of Africa along with the much later Beelzebufo . Africa is thought to have been an important region for the evolution of the Neobatrachia, namely for the diverse superfamily Ranoidea, of which no Cretaceous fossils are known. Cretadhefdaa shares some morphological similarities with Ranoidea, although it cannot be confidently assigned to the group. [1]
The Neobatrachia are a suborder of the Anura, the order of frogs and toads.
Heleophrynidae is a family of frogs, commonly known as ghost frogs. They are thought to be the most basal group in the Neobatrachia. The family consists of two genera, Heleophryne and Hadromophryne, with seven species. Ghost frogs live in swift-moving mountain streams in South Africa. The common name of "ghost frogs" may have been coined because of their occurrence in Skeleton Gorge.
Rebbachisaurus is a genus of sauropod dinosaur of the superfamily Diplodocoidea, that lived during the Late Cretaceous period in Africa and possibly also South America about 99-97 million years ago. Remains attributed to Rebbachisaurus have been found in Morocco, Niger, Algeria, Tunisia and possibly also Argentina, although only the Moroccan remains can be referred to the genus without doubt. The discovery of Rayososaurus, a South American sauropod nearly identical to Rebbachisaurus which may have actually have been the same animal as Rebbachisaurus, supports the theory that there was still a land connection between Africa and South America during the Early Cretaceous, long after it was commonly thought the two continents had separated.
Sigilmassasaurus is a possibly dubious genus of spinosaurid dinosaur that lived approximately 100 to 94 million years ago during the Late Cretaceous Period in what is now northern Africa. Named in 1996 by Canadian paleontologist Dale Russell, it contains a single species, Sigilmassasaurus brevicollis. The identity of the genus has been debated by scientists, with some considering its fossils to represent material from the closely related species Spinosaurus aegyptiacus, while others have classified it as a separate taxon, forming the clade Spinosaurini with Spinosaurus as its sister taxon.
Peirosauridae is a Gondwanan family of mesoeucrocodylians that lived during the Cretaceous period. It was a clade of terrestrial crocodyliforms that evolved a rather dog-like skull, and were terrestrial carnivores. It was phylogenetically defined in 2004 as the most recent common ancestor of Peirosaurus and Lomasuchinae and all of its descendants. Lomasuchinae is a subfamily of peirosaurids that includes the genus Lomasuchus.
The Kem Kem Group is a geological group in the Kem Kem region of eastern Morocco, whose strata date back to the Cenomanian stage of the Late Cretaceous. Its strata are subdivided into two geological formations, with the lower Ifezouane Formation and the upper Aoufous Formation, with the Gara Sbaa Formation and Douira Formation used in the southern Tafilalt region. It is exposed on an escarpment along the Algeria–Morocco border.
Kemkemia is a genus of probable crocodyliforms living in the Cretaceous, described from a single fossil that was recovered in 1999 from Morocco by an Italian team searching for fossil invertebrates. The fossil of Kemkemia dates from the Cenomanian age.
Alanqa is a genus of pterodactyloid pterosaur from the Late Cretaceous period of what is now the Kem Kem Beds of southeastern Morocco. The name Alanqa comes from the Arabic word العنقاءal-‘Anqā’, for a mythical bird of Arabian culture.
Sauroniops is a controversial genus of carnivorous basal carcharodontosaurid theropod dinosaur known from the Late Cretaceous Gara Sbaa Formation, and possibly also the Kem Kem Formation, both of Morocco. The type, and currently only, species is S. platytholus.
The Aoufous Formation is a geological formation that contains some of the vertebrate assemblage of the Kem Kem Group, of Late Cretaceous date. Two other formations comprise the Kem Kem beds: the underlying Ifezouane Formation and the overlying Akrabou Formation.
Concavotectum is an extinct genus of tselfatiiforme bony fish that lived during the Cenomanian in Morocco and possibly Egypt. It was discovered and named in 2008 and is known from a single well preserved hand-sized skull and a few isolated vertebrae discovered in the Kem Kem Group. The type species, C. moroccensis, was named in 2008 and described in 2010. A possible second and third specimen, found in the Baharija Formation, consists of a 2 skulls and several vertebra, which were all destroyed on the night of 24-25 April 1940, during the Bombing of Munich in World War II. They are currently the holotype of the possible synonym Paranogmius.
Bicuspidon is an extinct genus of Polyglyphanodontid lizard known from the Late Cretaceous of North America, Europe and Africa, two species, B. numerosus and B. smikros are known from the Cenomanian of Utah in the Mussentuchit Member of the Cedar Mountain Formation and the Naturita Formation respectively. While B. hatzegiensis is known from the Maastrichtian Sânpetru Formation of Romania and B. hogreli is known from the Cenomanian Kem Kem Beds of Morocco. An indeterminate taxon closely related to B. hatzegiensis referred to as B. aff. hatzegiensis is known from the Santonian Csehbánya Formation of Hungary. The dentition is heterodont, with conical anterior teeth and transversely orientated biscuspid posterior teeth.
Afrotapejara is an extinct genus of tapejarid pterosaur discovered in Morocco. The type species, Afrotapejara zouhri, was named and described in 2020. It was the first tapejarid discovered in Africa and the fourth pterosaur discovered in the Kem Kem Beds.
Leptostomia is a genus of long-beaked pterosaur from the mid-Cretaceous (?Albian-Cenomanian) of Morocco, North Africa. The type species is L. begaaensis, which was named and described in 2021 from sediments of the Kem Kem Group in Morocco. It was a small animal with a long, slender bill which is thought to have been used to probe sediments for worms and other invertebrates, similar to kiwi birds and curlews. Leptostomia is likely a member of the Azhdarchoidea.
Lapparentophis is an extinct genus of terrestrial ophidian known from the Kem Kem Beds of Northwestern Africa that was first described by Robert Hoffstetter in 1959. Two species are known: the type species, L. defrennei from Algeria, and a second species, L. ragei from Morocco, which is only known from the holotype MHNM.KK387 and the paratype MHNM.KK388, two isloated trunk vertebrae.
Antaeusuchus taouzensis is a species of peirosaurid notosuchian from the Late Cretaceous Kem Kem Group of Morocco. It was described in 2021, and it is the only species in the genus Antaeusuchus. It is the fourth notosuchian described from the region and the second Kem Kem peirosaurid after Hamadasuchus. A 2023 study proposes that Antaeusuchus may not be distinct enough to warrant its own genus and that it instead represents another species of Hamadasuchus.
Afrobatrachia is clade of frogs in the suborder Neobatrachia, all of which are restricted to Africa, including some species in Madagascar and the Seychelles. It is the sister group to the clade Natatanura, which contains all other members of Ranoidea aside from Microhylidae
Sooglossoidea is a superfamily of frogs. It contains only two highly divergent families consisting of three genera with two species each, one family being found in southwestern India and the other in the Seychelles.
Serenoichthys is an extinct genus of small bichir from the Late Cretaceous (Cenomanian) of southeastern Morocco. The genus is monotypic, the type and only species being Serenoichthys kemkemensis. Only known at first from postcranial skeletons, complete specimens were later discovered.
Oniichthys is an extinct genus of gar in the family Lepisosteidae. It contains a single species, O. falipoui, known from the Late Cretaceous (Cenomanian) of Morocco.