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Dentaliida
| Description | Dentaliida is one of the two orders of scaphopod mollusks, commonly known as elephant's tusk shells. The order Dentaliida contains most of the larger scaphopods, and is distinguished from the other order (the Gadilidae) by the shape of its shell (the Dentaliid shell tapers uniformly from anterior to posterior; the Gadilid one has an anterior shell opening slightly smaller than the shell's widest point), the shape of the foot (the Dentaliid foot is boat-shaped with a central trough; the Gadilid foor is star-shaped), and the arrangement of some of their internal organs. From Wikipedia article at https://en.wikipedia.org/wiki/Dentaliida, which is released under the Creative Commons Attribution-Share-Alike License 3.0. | ||||||||||||||||||||||||||||||||||||
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| Source Data |
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| Rank | order | ||||||||||||||||||||||||||||||||||||
| Taxonomy (GBIF,PBDB) | Life : Animalia : Mollusca : Scaphopoda : Dentaliida | ||||||||||||||||||||||||||||||||||||
| Taxonomic Status (GBIF) | accepted | ||||||||||||||||||||||||||||||||||||
| Classification (PBDB,GBIF) |
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| Scientific Name | Dentaliida | ||||||||||||||||||||||||||||||||||||
| Opinions (PBDB) |
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| Status (PBDB) | extant | ||||||||||||||||||||||||||||||||||||
| Taxon Size (PBDB) | 167 | ||||||||||||||||||||||||||||||||||||
| Extant Size (PBDB) | 48 (29%) | ||||||||||||||||||||||||||||||||||||
| First Recorded Appearance | 461 - 450 Ma Ordovician | ||||||||||||||||||||||||||||||||||||
| Motility | slow-moving | ||||||||||||||||||||||||||||||||||||
| Vision | blind (based on Scaphopoda) | ||||||||||||||||||||||||||||||||||||
| Diet | deposit feeder | ||||||||||||||||||||||||||||||||||||
| Ecospace Comments | ECOSPACE: 423. LIFE HISTORY: Predator, mainly Foraminifera, but also other micro-prey, according to Kiel & Goedert (2006); semi-infaunal and shallow infaunal, slow, miner according to Bambach et al. (2007). | ||||||||||||||||||||||||||||||||||||
| Taphonomy | aragonite (based on Scaphopoda) | ||||||||||||||||||||||||||||||||||||
| Primary Reference (PBDB) | A. Wells and W. W. K. Houston. 2001. Zoological Catalogue of Australia: Mollusca 17(2) | ||||||||||||||||||||||||||||||||||||
| Common Name(s) | ツノガイ | ||||||||||||||||||||||||||||||||||||
| Wikipedia | https://en.wikipedia.org/wiki/Dentaliida |
External Images
Fossil Distribution
Subtaxa
| Name | Status | Common Name(s) | Fossil Occurrences | Oldest | Youngest |
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| Anulidentaliidae family | accepted (GBIF) listed (PBDB) | 0 Ma Extant | |||
| Baltodentaliidae ✝ family | accepted (GBIF) listed (PBDB) | ||||
| Calliodentaliidae family | accepted (GBIF) listed (PBDB) | 0 Ma Extant | |||
| Dentaliidae family | accepted (GBIF) listed (PBDB) | 2,214 | 427 Ma Silurian | 0 Ma Extant | |
| Fustiariidae family | accepted (GBIF) listed (PBDB) | 30 | 72.1 Ma Late/Upper Cretaceous | 0 Ma Extant | |
| Gadilinidae family | accepted (GBIF) listed (PBDB) | 27 | 168 Ma Middle Jurassic | 0 Ma Extant | |
| Laevidentaliidae family | accepted (GBIF) listed (PBDB) | 133 | 461 Ma Middle Ordovician | 0 Ma Extant | |
| Omniglyptidae family | accepted (GBIF) listed (PBDB) | 0 Ma Extant | |||
| Prodentaliidae ✝ family | accepted (GBIF) listed (PBDB) | 115 | 314 Ma Carboniferous | 165 Ma Middle Jurassic | |
| Rhabdidae family | accepted (GBIF) listed (PBDB) | 11 | 28.1 Ma Oligocene | 0 Ma Extant | |
| Progadilina ✝ genus | doubtful (GBIF) listed (PBDB) | 19 | 201 Ma Early Jurassic | 190 Ma Early Jurassic | |
| Suevidontus ✝ genus | doubtful (GBIF) listed (PBDB) |
Synonymy List
| Year | Name and Author |
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| 1776 | Dentaliida Da Costa |
| 2001 | Dentaliida Wells and Houston p. 91 |
| 2008 | Dentaliida Reynolds and Steiner p. 147 figs. Table 7.1 |
References
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
Lake Nacogdoches spillway, Nacogdoches County, Texas, USA