Neogastropoda

Source: Wikipedia, the free encyclopedia.

Neogastropoda
Temporal range: Early Cretaceous-Recent
The shell of a neogastropod, the muricid species Chicoreus palmarosae
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Wenz, 1938
Superfamilies

See text

Neogastropoda is an

molluscs.[1][2]

Description

Two neogastropods in the picture. Brunneifusus ternatanus (left) Murex trapa (right) in captivity.

The available

evolutionary scenario of an Early Cretaceous origin of the group followed by two rapid diversification rounds in the late Cretaceous and the Paleocene.[3]

These sea snails have only one auricle, one kidney and one monopectinate gill, i.e. the gill filaments develop on only one side of the central axis.[4]

The

olfactory organ, that is more developed than the one in the Mesogastropoda. They achieved important morphological changes including e.g., the elongation of the siphonal canal, a shift in the mouth opening to a terminal position on the head, and the formation of a well-developed proboscis.[3]

The nervous system is very concentrated. Many species have the ganglia in a compact space.

The rachiglossate (rasp-like) radula, a layer of serially arranged teeth within the mouth, has only three denticles (small teeth) in each transverse row.[4]

The Neogastropoda have

separate sexes
.

There are about 16,000 species. Neogastropoda includes many well-known gastropods including the

saprophagous
(scavengers).

Taxonomy

According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the clade Neogastropoda consists of these superfamilies:

When Neogastropoda was an order, it was placed within the prosobranch

gastropods according to the taxonomy developed by Thiele
(1921). The families which used to form the order Neogastropoda are now included in the clade Neogastropoda Cox, 1960.

Ever since Thiele (1929),

Cancellarioidea[7] or Buccinoidea[8] have been alternatively proposed as the sister group of the remaining Neogastropoda.[3]

Families

According to the taxonomy of the Gastropoda by Bouchet & Rocroi (2005) the taxonomy of clade Neogastropoda is as follows:

References

This article incorporates CC BY 2.0 text from the reference.[3]

  1. ^ "WoRMS - World Register of Marine Species - Neogastropoda". www.marinespecies.org. Retrieved 27 September 2018.
  2. ^ "Neogastropoda". Integrated Taxonomic Information System. Retrieved 27 September 2018.
  3. ^
    BMC Evolutionary Biology
    2009, 9: 210. 10.1186/1471-2148-9-210
  4. ^
    ISBN 978-0-03-056747-6
    .
  5. ^ Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526
  6. ^ Thiele J. (1929). Handbuch der Systematischen Weichtierkunde Volume 1 (1) (Loricata; Gastropoda: Prosobranchia). Jena, 376 pp. In: (23 October 1929). Reprint, Asher & Co., Amsterdam, 1963; translation by J.S. Bhatti Edited by: R. Bieler & P. Mikkelsen, Smithsonian Libraries, 1993.
  7. ^ Kantor YI. (1996). Phylogeny and Relationships of Neogastropoda. In: Taylor J. D. (ed.) Origin and Evolutionary Radiation of the Mollusca. Oxford, Oxford University Press, 221-230.
  8. ^ Ponder W. F., Colgan D. J., Healy J. M., Nützel A., Simone L. R. L. & Strong E. (2008). Caenogastropoda. In: Ponder W. F., Lindberg D. R. Phylogeny and evolution of the Mollusca. Berkeley, University of California Press, 331-383.
  • Bandel, K. & Dockery, D.T. III (2012): Protoconch characters of Late Cretaceous Latrogastropoda (Neogastropoda and Neomesogastropoda) as an aid in the reconstruction of the phylogeny of the Neogastropoda. – Freiberger Forschungshefte, C 542 psf (20): 93-128, pls. 1-5.

External links

Wikispecies has information related to Neogastropoda.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Neogastropoda&oldid=1189104417"