Bathysoma

{{Short description|Extinct genus of fishes}} {{Speciesbox | fossil_range = Early-Mid Paleocene, {{fossil range|63|59}} | image = Bathysoma_lutkeni.jpg | image_caption = Life restoration | taxon = Bathysoma lutkeni | authority = Davis, 1890 | parent_authority = Davis, 1890 }}

'''''Bathysoma''''' is an extinct genus of marine lampriform ray-finned fish from the early-mid Paleocene. It contains a single species, '''''B. lutkeni''''' from Sweden. Its fossils are common in exposures of the Danian København Limestone Formation at Limhamns kalkbrott, one of the largest quarries in northern Europe''.'' A single specimen is also known from an erratic boulder from the Selandian Lellinge Greensand Formation of southern Sweden.<ref name=":0">{{Cite web |title=PBDB |url=https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=35829 |access-date=2024-03-06 |website=Paleobiology Database}}</ref><ref>{{Cite web |date=2017-02-15 |title=Bulletin Volume 65 – 2017 |url=https://2dgf.dk/publikationer/bulletin/bulletin-volume-65-2017/ |access-date=2024-03-06 |website=Dansk Geologisk Forening |language=da-DK}}</ref><ref>{{Cite journal |last1=Friedman |first1=Matt |last2=V. Andrews |first2=James |last3=Saad |first3=Hadeel |last4=El-Sayed |first4=Sanaa |date=2023-06-16 |title=The Cretaceous–Paleogene transition in spiny-rayed fishes: surveying "Patterson's Gap" in the acanthomorph skeletal record André Dumont medalist lecture 2018 |url=https://popups.uliege.be/1374-8505/index.php?id=7048 |journal=Geologica Belgica |language=en |doi=10.20341/gb.2023.002 |issn=1374-8505|doi-access=free }}</ref>

It is the second oldest lampriform known, after ''Nardovelifer'' of Campanian/Maastrichtian Italy.<ref name=":1">{{Cite journal |last=Bannikov |first=A. F. |date=2014-11-01 |title=A new genus of the family Palaeocentrotidae (Teleostei, Lampridiformes) from the Oligocene of the northern Caucasus and comments on other fossil Veliferoidei |url=https://doi.org/10.1134/S0031030114060021 |journal=Paleontological Journal |language=en |volume=48 |issue=6 |pages=624–632 |doi=10.1134/S0031030114060021 |issn=1555-6174|url-access=subscription }}</ref> ''B. lutkeni'' has a disk-shaped body and an elongated head. It was originally described as a menid bony fish.<ref name=":0" /> Later, it was described as being a basal snake mackerel.<ref>[https://repository.si.edu/bitstream/handle/10088/9752/vz_05Friedman_Johnson_Mene.pdf?sequence=1&isAllowed=y] "A new species of Mene (Perciformes: Menidae) from the Paleocene of South America, with notes on paleoenvironment and a brief review of menid fishes."</ref> Eventually, anatomical similarities with the turkmenids were noted, and ''B. lutkeni'' is now regarded as an extremely basal lamprid.<ref name=":1" /><ref>{{Cite journal |last1=Brownstein |first1=Chase Doran |last2=Near |first2=Thomas J |date=2023-10-16 |title=Evolutionary origins of the lampriform pelagic radiation |url=https://doi.org/10.1093/zoolinnean/zlad142 |journal=Zoological Journal of the Linnean Society |doi=10.1093/zoolinnean/zlad142 |issn=0024-4082|url-access=subscription }}</ref>

==References== {{Reflist}}

==External links== {{Portal|Paleontology}} * [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=35828 ''Bathysoma''] at the Paleobiology Database *[http://www.helsinki.fi/~mhaaramo/metazoa/deuterostoma/chordata/actinopterygii/lampridiformes.html Lampridiformes]

{{Taxonbar|from=Q4869212}} Category:Monotypic prehistoric ray-finned fish genera Category:Lampriformes Category:Paleocene fish Category:Paleocene animals of Europe Category:Paleocene genus extinctions Category:Danian genera Category:Selandian genera Category:Paleogene fish of Europe Category:Fossils of Sweden Category:Fossil taxa described in 1890