Login
Login

Conchifera

{{Short description|Taxonomic term for shell-bearing molluscs}}

{{Automatic Taxobox

| fossil_range = {{Fossilrange|535|0|Fortunian - Recent}}

| image = Giant clam or Tridacna gigas.jpg

| taxon = Conchifera

| authority = Gegenbaur, 1878 [https://www.biolib.cz/en/taxon/id14988/]

| subdivision_ranks = Classes

| subdivision = *

}}

Conchifera is a subphylum of the phylum Mollusca, containing five extant classes: Monoplacophora, Cephalopoda, Gastropoda, Bivalvia, and Scaphopoda. Conchiferans can bear a single shell as in snails and ammonites, a single pair of shells as in clams, or lack a shell as in slugs and squid. The other subphylum is Aculifera, the members of which are shellless or have a row of several plates.

Non-monoplacophoran conchiferans emerged within the once-widespread Monoplacophora. The only descendant which retains its ancestral shape is the Tryblidiida. {{Clarify|date=September 2024|reason= What aspects of the ancestral shape are uniquely retained by them?}}

The monophyly of Conchifera is supported by molecular phylogenetic analysis. The relationships among the members of Conchifera are disputed. A grouping of Scaphopoda and Bivalvia, named Diasoma, has been proposed, but other studies find scaphopods to be more closely related to cephalopods or gastropods.

Conchifera originated in the early Cambrian period.

Classes

Classes within the Conchifera include:

See also

References

{{Reflist|refs=

{{cite journal | last=Chen | first=Zeyuan | last2=Baeza | first2=J. Antonio | last3=Chen | first3=Chong | last4=Gonzalez | first4=Maria Teresa | last5=González | first5=Vanessa Liz | last6=Greve | first6=Carola | last7=Kocot | first7=Kevin M. | last8=Arbizu | first8=Pedro Martinez | last9=Moles | first9=Juan | last10=Schell | first10=Tilman | last11=Schwabe | first11=Enrico | last12=Sun | first12=Jin | last13=Wong | first13=Nur Leena W. S. | last14=Yap-Chiongco | first14=Meghan | last15=Sigwart | first15=Julia D. | title=A genome-based phylogeny for Mollusca is concordant with fossils and morphology | journal=Science | display-authors=5 | volume=387 | issue=6737 | date=2025-02-28 | issn=0036-8075 | doi=10.1126/science.ads0215 | doi-access=free | pages=1001–1007}}

{{Cite journal| doi = 10.1038/s41598-019-56728-w| issn = 2045-2322| volume = 10| issue = 1| pages = 101| last1 = Kocot| first1 = Kevin M.| last2 = Poustka| first2 = Albert J.| last3 = Stöger| first3 = Isabella| last4 = Halanych| first4 = Kenneth M.| last5 = Schrödl| first5 = Michael| title = New data from Monoplacophora and a carefully-curated dataset resolve molluscan relationships| journal = Scientific Reports| date = 2020 | pmid = 31919367| pmc = 6952402}}

{{Cite journal| doi = 10.1126/science.186.4161.311| issn = 0036-8075 | volume = 186| issue = 4161| pages = 311–317| last1 = Runnegar| first1 = Bruce| last2 = Pojeta| first2 = John| title = Molluscan Phylogeny: The Paleontological Viewpoint: The early Paleozoic fossil record shows how living and extinct molluscan classes originated and diversified.| journal = Science| date = 1974-10-25| pmid = 17839855 | url = https://www.science.org/doi/10.1126/science.186.4161.311| url-access = subscription}}

{{Cite journal| doi = 10.1073/pnas.2302361120| issn = 0027-8424 | eissn = 1091-6490| volume = 120| issue = 40| pages = –2302361120| last1 = Song| first1 = Hao| last2 = Wang| first2 = Yunan| last3 = Shao| first3 = Haojing| last4 = Li| first4 = Zhuoqing| last5 = Hu| first5 = Pinli| last6 = Yap-Chiongco| first6 = Meghan K.| last7 = Shi| first7 = Pu| last8 = Zhang| first8 = Tao| last9 = Li| first9 = Cui| last10 = Wang| first10 = Yiguan| last11 = Ma| first11 = Peizhen| last12 = Vinther| first12 = Jakob| last13 = Wang| first13 = Haiyan| last14 = Kocot| first14 = Kevin M.| title = Scaphopoda is the sister taxon to Bivalvia: Evidence of ancient incomplete lineage sorting| journal = Proceedings of the National Academy of Sciences| date = 2023-10-03| pmid = 37738291 | hdl = 1983/edbbfb14-28f5-47ae-9189-ed00112ad1db| hdl-access = free}}

{{Cite journal| doi = 10.1046/j.1463-6409.2003.00121.x| issn = 0300-3256 | eissn = 1463-6409| volume = 32| issue = 4| pages = 343–356| last1 = Steiner| first1 = Gerhard| last2 = Dreyer| first2 = Hermann| title = Molecular phylogeny of Scaphopoda (Mollusca) inferred from 18S rDNA sequences: support for a Scaphopoda–Cephalopoda clade| journal = Zoologica Scripta| date = 2003}}

}}

External links

  • [https://www.biolib.cz/en/taxon/id14988/ BioLib info]

{{Taxonbar|from=Q675203}}

{{Authority control}}

Category:Mollusc taxonomy

Category:Animal subphyla

Category:Prehistoric mollusc taxonomy