Coccoderma

{{Automatic taxobox

| fossil_range = {{fossil range|152.2|145.0|Kimmeridgian to Tithonian}}

| image = Coccoderma suevicum 65.jpg

| image_caption = Specimen of C. suevicum

| taxon = Coccoderma

| authority = Quenstdedt, 1858

| type_species = {{extinct}}Coccoderma suevicum

| type_species_authority = Quenstdedt, 1858

| subdivision_ranks = Species

| subdivision = See text

| synonyms = * {{extinct}}Kokkoderma Quenstedt, 1858 (original spelling)

}}

Coccoderma is an extinct genus of prehistoric marine coelacanth which lived during the Late Jurassic period.{{Cite web |title=PBDB Taxon |url=https://paleobiodb.org/classic/basicTaxonInfo?taxon_no=34909 |access-date=2024-05-21 |website=Paleobiology Database}} Fossils have been found in Germany and France.{{Cite journal |last=Wendruff |first=Andrew J. |last2=Wilson |first2=Mark V.H. |date=2013 |editor-last=Sues |editor-first=Hans |title=New Early Triassic coelacanth in the family Laugiidae (Sarcopterygii: Actinistia) from the Sulphur Mountain Formation near Wapiti Lake, British Columbia, Canada |url=http://www.nrcresearchpress.com/doi/10.1139/cjes-2013-0010 |journal=Canadian Journal of Earth Sciences |language=en |volume=50 |issue=9 |pages=904–910 |doi=10.1139/cjes-2013-0010 |issn=0008-4077|url-access=subscription }} It was small in size, about 27.5 cm. They had very long and sharp teeth.

It was one of the earliest coelacanths to be properly studied by science. It lived far later than other members of its family (Laugiidae), which otherwise only existed during the Early Triassic, thus leaving an exceptional ghost lineage of over 100 million years. It was the last surviving member of the non-latimerioid coelacanths (e.g. coelacanths outside of Latimeriidae and Mawsoniidae).{{Cite journal |last=Toriño |first=Pablo |last2=Soto |first2=Matías |last3=Perea |first3=Daniel |date=2021-12-02 |title=A comprehensive phylogenetic analysis of coelacanth fishes (Sarcopterygii, Actinistia) with comments on the composition of the Mawsoniidae and Latimeriidae: evaluating old and new methodological challenges and constraints |url=https://www.tandfonline.com/doi/full/10.1080/08912963.2020.1867982 |journal=Historical Biology |language=en |volume=33 |issue=12 |pages=3423–3443 |doi=10.1080/08912963.2020.1867982 |issn=0891-2963|url-access=subscription }}

Species

†C. bavaricum Reis, 1888 - Tithonian of Germany (Solnhofen Limestone)
†C. gigas Reis, 1888 - Tithonian of Germany (Solhofen Limestone)
†C. suevicum Quenstdedt, 1858 - Kimmeridgian (Nusplingen Limestone) and Tithonian (Solnhofen Limestone) of Germany (=Coelacanthus harlemensis Winkler, 1874, Coccoderma nudum Reis, 1888){{Cite journal |last=Lambers |first=Paul H. |date=1991-06-01 |title=The identity of the type specimen ofCoelacanthus harlemensis Winkler (Pisces, Actinistia) from the lithographic limestone of Solnhofen (Tithonian), Bavaria |url=https://doi.org/10.1007/BF02985782 |journal=Paläontologische Zeitschrift |language=en |volume=65 |issue=1 |pages=173–189 |doi=10.1007/BF02985782 |issn=|url-access=subscription }}

File:Coccoderma bavaricum Reil, 1888.jpgAn indeterminate species is known from the Tithonian-aged Canjuers Lagerstätte of France, which was previously thought to be from the earliest Cretaceous (Berriasian).{{Cite journal |last=Peyer |first=Karin |last2=Charbonnier |first2=Sylvain |last3=Allain |first3=Ronan |last4=Läng |first4=Émilie |last5=Vacant |first5=Renaud |date=2014-07-01 |title=A new look at the Late Jurassic Canjuers conservation Lagerstätte (Tithonian, Var, France) |url=https://www.sciencedirect.com/science/article/pii/S1631068314000529 |journal=Comptes Rendus Palevol |series=Lagerstätten français et fossiles à conservation exceptionnelle |volume=13 |issue=5 |pages=403–420 |doi=10.1016/j.crpv.2014.01.007 |issn=1631-0683|url-access=subscription }}{{Citation |last=Cloutier |first=Richard |title=Diversity of Extinct and Living Actinistian Fishes (Sarcopterygii) |date=1991 |work=The biology of Latimeria chalumnae and evolution of coelacanths |pages=59–74 |editor-last=Musick |editor-first=John A. |url=https://doi.org/10.1007/978-94-011-3194-0_4 |access-date=2024-05-21 |place=Dordrecht |publisher=Springer Netherlands |language=en |doi=10.1007/978-94-011-3194-0_4 |isbn=978-94-011-3194-0 |last2=Forey |first2=Peter L. |editor2-last=Bruton |editor2-first=Michael N. |editor3-last=Balon |editor3-first=Eugene K.|url-access=subscription }}{{Cite web |last=Silva |first=Raphael Miguel da |date=2016 |title=Biogeografia histórica de Celacantos (Sarcopterygii: Actinistia) |url=https://www.bdtd.uerj.br:8443/bitstream/1/4962/1/Tese%20completa_Raphael%20M%20S_PPGEE_2018.pdf |access-date=2024-05-21 |website=bdtd.ibict.br}} The species C. nudum likely represents an immature C. suevicum. The species C. bavaricum and C. gigas may not belong to this genus. The species C. substriolatum from England has been reclassified as a mawsoniid, and tentatively to Trachymetopon.{{Cite journal |last=Cavin |first=Lionel |last2=Piuz |first2=André |last3=Ferrante |first3=Christophe |last4=Guinot |first4=Guillaume |date=2021-06-03 |title=Giant Mesozoic coelacanths (Osteichthyes, Actinistia) reveal high body size disparity decoupled from taxic diversity |url=https://www.nature.com/articles/s41598-021-90962-5 |journal=Scientific Reports |language=en |volume=11 |issue=1 |pages=11812 |doi=10.1038/s41598-021-90962-5 |issn=2045-2322|pmc=8175595 }}

References

[https://www.paleodb.org The Paleobiology Database]
[http://www.dinohunter.info/html/1880/1888.htm Dinohunter]
[http://www.fossilmuseum.net/Fossil_Sites/solnhofen/coccoderma/coccoderma.htm Fossil Museum]

Category:Coelacanthiformes

Category:Prehistoric lobe-finned fish genera

Category:Late Jurassic bony fish

Category:Kimmeridgian genus first appearances

Category:Tithonian genus extinctions

Category:Fossils of Germany

Category:Solnhofen fauna

Category:Fossils of France

Category:Fossil taxa described in 1858