|
Bursovaginoidea
Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have a narrow neck, making their head stand out more than other bursovagionoids and all filospermoids. Bursovaginoids, unlike filospermoids, have paired sensory organs and a penis. Also, all species in Bursovaginoidea have a sperm-storage organ called a Bursa (Anatomy), bursa. In suborder Scleroperalia, the bursa is cuticular, while in Conophoralia it is not. Species in order Conophoralia tend to have larger sperm than those in Sceloperalia. Distribution Sightings of bursovaginoids have been reported in various parts of the world, including England and the north-western and south-eastern parts of the United States. Bursovaginoids mostly live in oceans near the coasts, in depths of under 500 meters (1650 feet), most commonly around 300. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bursovaginoidea
Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have a narrow neck, making their head stand out more than other bursovagionoids and all filospermoids. Bursovaginoids, unlike filospermoids, have paired sensory organs and a penis. Also, all species in Bursovaginoidea have a sperm-storage organ called a Bursa (Anatomy), bursa. In suborder Scleroperalia, the bursa is cuticular, while in Conophoralia it is not. Species in order Conophoralia tend to have larger sperm than those in Sceloperalia. Distribution Sightings of bursovaginoids have been reported in various parts of the world, including England and the north-western and south-eastern parts of the United States. Bursovaginoids mostly live in oceans near the coasts, in depths of under 500 meters (1650 feet), most commonly around 300. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gnathostomulida
Gnathostomulids, or jaw worms, are a small phylum of nearly microscopic marine animals. They inhabit sand and mud beneath shallow coastal waters and can survive in relatively anoxic environments. They were first recognised and described in 1956. Anatomy Most gnathostomulids measure in length. They are often slender to thread-like worms, with a generally transparent body. In many Bursovaginoidea, one of the major group of gnathostomulids, the neck region is slightly narrower than the rest of the body, giving them a distinct head. Like flatworms they have a ciliated epidermis, but in contrast to flatworms, they have one cilium per cell. The cilia allow the worms to glide along in the water between sand grains, although they also use muscles, allowing the body to twist or contract, for movement. They have no body cavity, and no circulatory or respiratory system. The nervous system is simple, and restricted to the outer layers of the body wall. The only sense organs are modified c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrognathiidae
Austrognathiidae is a family of worms belonging to the order Bursovaginoidea Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have .... Genera: * '' Austrognatharia'' Sterrer, 1971 * '' Austrognathia'' Sterrer, 1965 * '' Triplignathia'' Sterrer, 1991 References {{Taxonbar, from=Q2270809 Gnathostomulida Platyzoa families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agnathiellidae
Agnathiellidae is a family of worms belonging to the order Bursovaginoidea Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have .... Genera: * '' Agnathiella'' Sterrer, 1971 * '' Paragnathiella'' Sterrer, 1997 References {{Taxonbar, from=Q2337898 Gnathostomulida Platyzoa families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Onychognathiidae
Onychognathiidae is a family of worms belonging to the order Bursovaginoidea Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have .... Genera: * '' Goannagnathia'' Sterrer, 2001 * '' Nanognathia'' Sterrer, 1972 * '' Onychognathia'' Riedl, 1971 * '' Valvognathia'' Kristensen & Nørrevang, 1978 * '' Vampyrognathia'' Sterrer, 1998 References {{Taxonbar, from=Q2321403 Gnathostomulida Platyzoa families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesognathariidae
Mesognathariidae is a family of worms belonging to the order Bursovaginoidea Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have .... Genera: * '' Labidognathia'' Riedl, 1970 * '' Mesognatharia'' Sterrer, 1966 * '' Tenuignathia'' Sterrer, 1976 References {{Taxonbar, from=Q2337162 Gnathostomulida Platyzoa families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gnathostomulidae
Gnathostomulidae is a family of worms belonging to the order Bursovaginoidea Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have .... Genera: * '' Chirognathia'' Sterrer & Sørensen, 2006 * '' Corculognathia'' Ehlers & Ehlers, 1973 * '' Gnathostomula'' Ax, 1956 * '' Ratugnathia'' Sterrer, 1991 * '' Semaeognathia'' Riedl, 1970 References {{Taxonbar, from=Q1900171 Gnathostomulida Platyzoa families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gnathostomariidae
Gnathostomariidae is a family of worms belonging to the order Bursovaginoidea Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have .... Genera: * '' Gnathostomaria'' Ax, 1956 References Gnathostomulida Platyzoa families {{Protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clausognathiidae
Clausognathiidae is a family of worms belonging to the order Bursovaginoidea Bursovaginoidea is one of the two orders in the phylum Gnathostomulida. Appearance and anatomy Bursovaginoids are rather small, ranging from a half of a millimeter to a full millimeter in length. Many species in the order Bursovaginoidea have .... Genera: * '' Clausognathia'' Sterrer, 1992 References Gnathostomulida Platyzoa families {{Protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Problognathiidae
''Problognathia'' is a monotypic genus of worms belonging to the monotypic family Problognathiidae. The only species is ''Problognathia minima''. The species is found in Bermuda ) , anthem = "God Save the King" , song_type = National song , song = " Hail to Bermuda" , image_map = , map_caption = , image_map2 = , mapsize2 = , map_caption2 = , subdivision_type = Sovereign state , subdivision_name = , e .... References {{Taxonbar, from1=Q2338423, from2=Q2337991, from3=Q2337615 Gnathostomulida Platyzoa genera Monotypic animal genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paucidentulidae
''Paucidentula'' is a monotypic genus of worm Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always). Worms vary in size from microscopic to over in length for marine polychaete wor ...s belonging to the monotypic family Paucidentulidae. The only species is ''Paucidentula anonyma''. The species is found in Atlantic Ocean. References Gnathostomulida Platyzoa genera Monotypic animal genera {{protostome-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |