Dallina

Dallina is a genus of small to average size lampshells (maximum 35 millimetres or 1.4 inches long).[1] It is known since the Miocene.

Dallina
Temporal range: Miocene–Recent
Dallina septigera, 23mm wide, recent
Scientific classification
Kingdom:
Animalia
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Terebratulida
Suborder:
Terebratellidina
Superfamily:
Terebratelloidea
Family:
Dallinidae
Genus:
Dallina

Beecher, 1893
species
  • D. septigera (Lovén, 1845) (type species) = Magellania septigera, M. septata, Japinithyris septata, Terebratula septata, Waldheimia septigera, W. septata[1]
  • D. elongata Hatai, 1940
  • D. eltanini Foster, 1974
  • D. floridana (Pourtalès, 1867)
  • D. obessa Yabe & Hatai, 1934
  • D. parva Cooper, 1981
  • D. profundis Konjukova, 1957
  • D. raphaelis (Dall, 1970) = Waltheimia raphaelis
  • D. triangularis Yabe & Hatai, 1934

Description

Small to large, triangular to subquadrangular in outline; rectimarginate to paraplicate; beak erect, without beak ridges; foramen small to large, mesothyrid, attrite, symphytium concave. Hinge teeth small, weak; pedicle collar very short. Cardinalia lamellar with excavate inner and outer hinge plates separated by narrow crural bases; inner hinge plates converging on median septum to form V-shaped septalium; cardinal process not differentiated; median septum low anteriorly, extending beyond midvalve; adult loop teloform.[2]

  • Dallina septigera, brachial valve, 24mm long, near the Philippines
  • pedicle valve
  • anterior view
  • interior view
  • lateral view
gollark: This is part of my code guessing submission next round, so you should probably work it out before then.
gollark: Precisely in accordance with VOTED LORRIES procedure.
gollark: Great!
gollark: I mean, yes, to some extent. As it's not in `IO`, it is free of backdoors, however.
gollark: Can you guess what the code does? It's great* code.

References
  1. Atkins, D. (1960). "A note on Dallina septigera (Lovèn), (Brachiopoda, Dallinidae)" (PDF). Journal of the Marine Biological Association of the United Kingdom. 3 (1): 91–99. doi:10.1017/s0025315400013126. Archived from the original (PDF) on 2014-11-29.
  2. Moore, R.C. (1965). Brachiopoda. Treatise on Invertebrate Paleontology. Part H., Volume 2. Boulder, Colorado/Lawrence, Kansas: Geological Society of America/University of Kansas Press. pp. H835. ISBN 0-8137-3015-5.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.