Acotylea

Acotylea
Temporal range: Cretaceous–Present, ~120–0 Ma[1] Based on a molecular clock analysis
From the left to right of each row, from top to bottom: Stylochus stellatus, Callioplana marginata, and Paraplanocera marginata (Stylochoidea); Leptoplanoidea indet., Euplana gracilis, and Chimaeriplana japonica (Leptoplanoidea)
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Platyhelminthes
Order: Polycladida
Suborder: Acotylea
Lang, 1884
Synonyms
  • Acotylina Pearse, 1936

Acotylea is a suborder of free-living marine turbellarian flatworms in the order Polycladida.

Description

As currently defined, Acotylea includes polyclads with a Lang's vesicle in the female reproductive system and the male copulatory apparatus directed backwards. When tentacles are present, they are nuchal. The eyespot groups can be nuchal, cerebral, and marginal.[2]

Taxonomy

The internal classification of Acotylea has been unstable, with some genera and families constantly changing place as new molecular and morphological data are analyzed. The current classification is presented below:[3][4][5]

See also

References

  1. ^ Cuadrado, Daniel; Machordom, Annie; Noreña, Carolina (2026-04-11). "A deep-time perspective on Polycladida (Platyhelminthes) through integrated phylogenetic and molecular clock analyses". Organisms Diversity & Evolution. doi:10.1007/s13127-026-00699-0. ISSN 1618-1077.
  2. ^ Bahia, Juliana; Padula, Vinicius; Schrödl, Michael (2017). "Polycladida phylogeny and evolution: Integrating evidence from 28S rDNA and morphology". Organisms Diversity & Evolution. 17 (3): 653–678. Bibcode:2017ODivE..17..653B. doi:10.1007/s13127-017-0327-5.
  3. ^ Dittmann, Isabel L.; Cuadrado, Daniel; Aguado, Maria Teresa; Noreña, Carolina; Egger, Bernhard (2019). "Polyclad phylogeny persists to be problematic". Organisms Diversity & Evolution. 19 (4): 585–608. Bibcode:2019ODivE..19..585D. doi:10.1007/s13127-019-00415-1. hdl:10261/247677.
  4. ^ Oya, Yuki; Kajihara, Hiroshi (2020). "Molecular Phylogenetic Analysis of Acotylea (Platyhelminthes: Polycladida)". Zoological Science. 37 (3): 271–279. doi:10.2108/zs190136. PMID 32549541.
  5. ^ Goodheart, Jessica A.; Collins, Allen G.; Cummings, Michael P.; Egger, Bernhard; Rawlinson, Kate A. (2023). "A phylogenomic approach to resolving interrelationships of polyclad flatworms, with implications for life-history evolution". Royal Society Open Science. 10 (3). Bibcode:2023RSOS...1020939G. doi:10.1098/rsos.220939. PMC 10049750.
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"Acotylea". The Encyclopedia of Life.

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