''Allolepidotus'' ("different ''

Lepidotes ''Lepidotes'' (from , 'covered with scales') (previously known as ''Lepidotus'') is an extinct genus of Mesozoic ray-finned fish. It has long been considered a wastebasket taxon, characterised by "general features, such as thick rhomboid scales ...

''") is an

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

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 prehistoric marine

holostean Holostei is a group of ray-finned bony fish. It is divided into two major clades, the Halecomorphi, represented by the single living genus, '' Amia'' with two species, the bowfins (''Amia calva'' and ''Amia ocellicauda''), as well as the Ginglymo ...

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 ...

from the

Middle Triassic In the geologic timescale, the Middle Triassic is the second of three epoch (geology), epochs of the Triassic period (geology), period or the middle of three series (stratigraphy), series in which the Triassic system (stratigraphy), system is di ...

of Italy. It contains a single species, ''A. ruppelii'', from the late

Ladinian The Ladinian is a stage and age in the Middle Triassic series or epoch. It spans the time between Ma and ~237 Ma (million years ago). The Ladinian was preceded by the Anisian and succeeded by the Carnian (part of the Upper or Late Triassic ...

-aged Perledo-Varenna Formation. It was formerly referred to the

halecomorph Halecomorphi is a taxon of ray-finned bony fish in the clade Neopterygii. The only extant Halecomorph species are the bowfin (''Amia calva'') and eyespot bowfin (''Amia ocellicauda''), but the group contains many extinct species in several famili ...

order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood ...

Panxianichthyiformes, but is now thought to be a member of the Ionoscopiformes. The misspelled

specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

(which is sometimes amended to ''rueppelli'' in later studies) honors naturalist

Eduard Rüppell Wilhelm Peter Eduard Simon Rüppell, also spelled Rueppell (20 November 1794 – 10 December 1884) was a German Natural history, naturalist and List of explorers, explorer, best known for his collections and descriptions of plants and animals from ...

. The species ''A. bellottii'' was also formerly placed in this genus, but is now known to be a member of ''

Eoeugnathus ''Eoeugnathus'' (Greek for "dawn true-jaw") is an extinct genus of prehistoric marine ray-finned fish belonging to the Halecomorphi. ''Eoeugnathus'' existed during the Middle Triassic in what is now Europe. It contains two species: * ''E. bello ...

''. The species ''A. nothosomoides'', also placed in this genus, is now placed in its own genus, '' Perledovatus''.

References

Prehistoric ray-finned fish genera Ionoscopiformes Triassic bony fish Triassic fish of Europe Fossils of Italy Ladinian genera Middle Triassic fish Fossil taxa described in 1889 {{Triassic-fish-stub

See also

References