#scaphopoda — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #scaphopoda, aggregated by home.social.
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#Snails are primarily marine #mollusks. According to current hypotheses, the #sistergroup might be #Cephalopoda plus #Scaphopoda (Link below) . One #Apomorphy, i.e. evolutionary new acquisitions of the stemspecies, is the #asymmetrical #shell that is wound in one direction, which is due to a #torsion of the #mantle and visceral sac.
The species in my #photos is #Cornu #aspersum from Italy. #biodiversity,
© #StefanFWirth Berlin 2025Reference
Sumner-Rooney et al. (2015):
https://doi.org/10.1111%2Fede.12164 -
#Snails are primarily marine #mollusks. According to current hypotheses, the #sistergroup might be #Cephalopoda plus #Scaphopoda (Link below) . One #Apomorphy, i.e. evolutionary new acquisitions of the stemspecies, is the #asymmetrical #shell that is wound in one direction, which is due to a #torsion of the #mantle and visceral sac.
The species in my #photos is #Cornu #aspersum from Italy. #biodiversity,
© #StefanFWirth Berlin 2025Reference
Sumner-Rooney et al. (2015):
https://doi.org/10.1111%2Fede.12164 -
#Snails are primarily marine #mollusks. According to current hypotheses, the #sistergroup might be #Cephalopoda plus #Scaphopoda (Link below) . One #Apomorphy, i.e. evolutionary new acquisitions of the stemspecies, is the #asymmetrical #shell that is wound in one direction, which is due to a #torsion of the #mantle and visceral sac.
The species in my #photos is #Cornu #aspersum from Italy. #biodiversity,
© #StefanFWirth Berlin 2025Reference
Sumner-Rooney et al. (2015):
https://doi.org/10.1111%2Fede.12164 -
#Snails are primarily marine #mollusks. According to current hypotheses, the #sistergroup might be #Cephalopoda plus #Scaphopoda (Link below) . One #Apomorphy, i.e. evolutionary new acquisitions of the stemspecies, is the #asymmetrical #shell that is wound in one direction, which is due to a #torsion of the #mantle and visceral sac.
The species in my #photos is #Cornu #aspersum from Italy. #biodiversity,
© #StefanFWirth Berlin 2025Reference
Sumner-Rooney et al. (2015):
https://doi.org/10.1111%2Fede.12164 -
#Snails are primarily marine #mollusks. According to current hypotheses, the #sistergroup might be #Cephalopoda plus #Scaphopoda (Link below) . One #Apomorphy, i.e. evolutionary new acquisitions of the stemspecies, is the #asymmetrical #shell that is wound in one direction, which is due to a #torsion of the #mantle and visceral sac.
The species in my #photos is #Cornu #aspersum from Italy. #biodiversity,
© #StefanFWirth Berlin 2025Reference
Sumner-Rooney et al. (2015):
https://doi.org/10.1111%2Fede.12164 -
#Genomes of enigmatic tusk shells provide new insights into early molluscan #evolution https://phys.org/news/2023-09-genomes-enigmatic-tusk-shells-insights.html
#Scaphopoda is the sister taxon to #Bivalvia: Evidence of ancient incomplete lineage sorting https://www.pnas.org/doi/10.1073/pnas.2302361120
"#Scaphopods exhibit a mosaic of features resembling other lineages: tentacles like the arms of #cephalopods, unique shell ontology similar to #bivalves, and a partially degenerated head that seemingly represents an intermediate state between bivalves and #gastropods"