Talk:Terebratulida

Animals Low‑importance

Terebratulida is within the scope of WikiProject Animals, an attempt to better organize information in articles related to animals and zoology. For more information, visit the project page.AnimalsWikipedia:WikiProject AnimalsTemplate:WikiProject Animalsanimal articles

Low

This article has been rated as Low-importance on the project's importance scale.

WikiProject Animals To-do:

Here are some Open Tasks :

Copyedit:
Merge: GLAM/ARKive donated texts into articles about endangered species.
Improve: Photoperiodism, Tool use by non-human animals, Omnivore, Animal suicide, Sphaerium beckmani (a species in family Sphaeriidae),
Requests:
- Mammals:
- Invertebrates: Campocraspedon
- Fishes: Zaniolepis frenata
Merge: GLAM/ARKive donated texts into articles about endangered species.
Expand: Junqueira cow, Atka mackerel
Nominate and vote: Science collaboration of the month, Article Improvement Drive, WikiProject Animals Collaboration

Derivation

The article as it stands give Atrypida as the possible source for the Terebratulida. Although I've found nothing so far as to the ancestry of the terebratulids or what the Atrypida may have given rise to, I doubt it. Terebratulids have a looped brachidium, in atripids it's spiral. It seems to me that the Pentamerida is a more likely source, with some having looped brachidia. True, all three have narrow hinge lines, but as for the Atrypida that's about the only similarity, other than for being a brachiopod. J.H.McDonnell (talk) 21:51, 1 July 2010 (UTC)[reply]