Narthecoceratidae
Narthecoceratidae is an extinct family of orthocone cephalopods who lived in marine environments in what is now North America during the Ordovician from 460.5—449 mya, existing for approximately 11.5 million years.[1]
| Narthecoceratidae Temporal range: Ordovician | |
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| Family: | Narthecoceratidae |
Taxonomy
Narthecoceratidae was named by Flower (1958). It was assigned to Endocerida by Teichert et al. (1964); and reassigned to Orthocerida by Frey (1981).[2][3]
Morphology
The shell is usually long, and may be straight ("orthoconic") or gently curved. In life, these animals may have been similar to the modern squid, except for the long shell.
Fossil distribution
Fossil distribution includes Ohio, Franklin District, Canada, and Manitoba, Canada.
gollark: I am talking meta-level here; I'm not saying "culling is unhelpful" but "it doesn't actually help anything to try and shove things into the culling box".
gollark: It might not be *technically wrong* by a strict definition to say that trying to improve health standards and whatever to reduce population growth is culling, but it's not... helpful? As in, it doesn't really matter whether the relevant actions fit into [bad and emotionally charged category], but whether they're actually bad.
gollark: "Culling" is generally meant to mean something more like actively going out and killing people.
gollark: It probably comes out net-positive, if they vaccinated a lot of people and didn't have too many issues.
gollark: I am trying to think of a not very politically charged example. This is hard.
References
- PaleoBiology Database: Narthecoceratidae, basic info
- C. Teichert, B. Kummel, W.C. Sweet, H.B. Stenzel, W.M. Furnish, B.F. Glenister, H.K. Erben, R.C. Moore, and D.E. Nodine Zeller. 1964. Cephalopoda - general features - Endoceratoidea - Actinoceratoidea - Nautiloidea - Bactritoidea. Treatise on Invertebrate Paleontology K(3):1-519
- R. C. Frey. 1981. Narthecoceras (Cephalopoda) from the Upper Ordovician (Richmondian) of Southwest Ohio. Journal of Paleontology 55(6):1217-1224
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