''Martillichthys'' is an extinct genus of
pachycormiform fish, known from the late
Middle Jurassic
The Middle Jurassic is the second Epoch (geology), epoch of the Jurassic Period (geology), Period. It lasted from about 174.1 to 161.5 million years ago. Fossils of land-dwelling animals, such as dinosaurs, from the Middle Jurassic are relativel ...
(
Callovian
In the geologic timescale, the Callovian is an age and stage in the Middle Jurassic, lasting between 165.3 ± 1.1 Ma (million years ago) and 161.5 ± 1.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the ...
)
Oxford Clay
The Oxford Clay (or Oxford Clay Formation) is a Jurassic marine sedimentary rock formation underlying much of southeast England, from as far west as Dorset and as far north as Yorkshire. The Oxford Clay Formation dates to the Jurassic, specific ...
, England. It is a member of the
suspension feeding
Filter feeders are aquatic animals that acquire nutrients by feeding on organic matters, food particles or smaller organisms (bacteria, microalgae and zooplanktons) suspended in water, typically by having the water pass over or through a specia ...
clade within the Pachycormiformes, most closely related to ''
Asthenocormus
''Asthenocormus'' is an extinct genus of large marine pachycormiform ray-finned fish. It contains a single species, ''A. titanius''. A member of the edentulous suspension feeding clade within the Pachycormiformes, fossils have been found in the ...
.''
References
{{Taxonbar, from=Q41155331
Pachycormiformes
Prehistoric ray-finned fish genera