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''Concavotectum'' is an extinct
A new tselfatiiform teleost from the Upper Cretaceous (Cenomanian) of the Kem Kem beds, Southern Morocco
Publisher: Verlag Dr. F. Pfeil, Editors: Gloria Arratia, Hasn-Peter Schiultze, Mark V. H. Wilson, pp.199-216 and described in 2010.Cavin L, Tong H, Boudad L, Meister C, Piuz A, Tabouelle J, et al. (2010) Vertebrate assemblages from the early Late Cretaceous of southeastern Morocco: An overview. Journal of African Earth Sciences Geological Society of Africa Presidential Review No 16 57: 391–412. A possible second and third specimen, found in the Baharija Formation, consists of a 2
Ergebnisse der Forschungsreisen Prof. Stromers in den Wusten Aegyptens. II. Wirbeltierreste der Baharije-Stufe (unterstes Cenoman). 16. Neue Untersuchungen an den Fischresten.
''Abhandlungen der Bayerischen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Abteilung'', ''32'', pls-1. Some differences are evident between the surviving illustrations of ''Paranogmius'' and the skull of ''Concavotectum'', so they are tentatively considered distinct genera, and a new genus is still necessary given the destruction of the former type specimens.
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of freshwater plethodid ray-finned fish
Actinopterygii (; ), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of sk ...
that lived during the Cenomanian
The Cenomanian is, in the International Commission on Stratigraphy's (ICS) geological timescale, the oldest or earliest age (geology), age of the Late Cretaceous epoch (geology), Epoch or the lowest stage (stratigraphy), stage of the Upper Cretace ...
in Morocco
Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to Algeria–Morocc ...
and possibly Egypt
Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
. It was discovered and named in 2008 and is known from a single well preserved hand-sized skull
The skull, or cranium, is typically a bony enclosure around the brain of a vertebrate. In some fish, and amphibians, the skull is of cartilage. The skull is at the head end of the vertebrate.
In the human, the skull comprises two prominent ...
and a few isolated vertebrae
Each vertebra (: vertebrae) is an irregular bone with a complex structure composed of bone and some hyaline cartilage, that make up the vertebral column or spine, of vertebrates. The proportions of the vertebrae differ according to their spinal ...
discovered in the Kem Kem Group
The Kem Kem Group (commonly known as the Kem Kem beds) is a geological group (stratigraphy), 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 ...
( Gara Sbaa Formation). The type species, ''C. moroccensis'', was named in 2008''Mesozoic Fishes 4'' (2008) - Homology and Phylogeny, ChapterA new tselfatiiform teleost from the Upper Cretaceous (Cenomanian) of the Kem Kem beds, Southern Morocco
Publisher: Verlag Dr. F. Pfeil, Editors: Gloria Arratia, Hasn-Peter Schiultze, Mark V. H. Wilson, pp.199-216 and described in 2010.Cavin L, Tong H, Boudad L, Meister C, Piuz A, Tabouelle J, et al. (2010) Vertebrate assemblages from the early Late Cretaceous of southeastern Morocco: An overview. Journal of African Earth Sciences Geological Society of Africa Presidential Review No 16 57: 391–412. A possible second and third specimen, found in the Baharija Formation, consists of a 2
skull
The skull, or cranium, is typically a bony enclosure around the brain of a vertebrate. In some fish, and amphibians, the skull is of cartilage. The skull is at the head end of the vertebrate.
In the human, the skull comprises two prominent ...
s and several vertebra
Each vertebra (: vertebrae) is an irregular bone with a complex structure composed of bone and some hyaline cartilage, that make up the vertebral column or spine, of vertebrates. The proportions of the vertebrae differ according to their spina ...
, which were discovered in 1916 and were all destroyed on the night of 24-25 April 1944, during the Bombing of Munich in World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
. They are currently the holotype of the possible synonym '' Paranogmius''.Weiler, W. (1935)Ergebnisse der Forschungsreisen Prof. Stromers in den Wusten Aegyptens. II. Wirbeltierreste der Baharije-Stufe (unterstes Cenoman). 16. Neue Untersuchungen an den Fischresten.
''Abhandlungen der Bayerischen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Abteilung'', ''32'', pls-1. Some differences are evident between the surviving illustrations of ''Paranogmius'' and the skull of ''Concavotectum'', so they are tentatively considered distinct genera, and a new genus is still necessary given the destruction of the former type specimens.
References
Tselfatiiformes Prehistoric ray-finned fish genera Late Cretaceous bony fish Late Cretaceous fish of Africa Cenomanian genera Fossils of Morocco Fossil taxa described in 2008 {{Paleo-rayfinned-fish-stub