Saccocirridae
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| Saccocirridae | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Annelida |
| Class: | Polychaeta |
| Order: | incertae sedis |
| Family: | Saccocirridae Czerniavsky, 1881 |
| Genera[1] | |
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The Saccocirridae are small interstitial polychaetes common in coarse sand on reflective, surf beaches, usually within the zone of retention. Saccocirridae have a worldwide distribution and many more species likely remain to be described. These polychates are usually between 2 and 10 millimetres (0.08 and 0.39 in) in length and 500 μm wide. They have reduced parapodia and are considered a true interstitial species, incapable of burrowing through finer sediments.
Morphology[edit]
Based on Saccocirrus sonomacus from the Pacific Coast of the Americas, the prostomium supports a pair of grooved palps that have a primarily sensory purpose. A pair of eyes are also present. The peristomium is probably reduced to a circumoral ring. The pygidium is usually bilobed.
References[edit]
- ^ Read G, Fauchald K, eds. (2011). "Saccocirridae". World Polychaeta database. World Register of Marine Species. Retrieved 2 February 2024.
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