| 释义 |
Definition of Pogonophora in English: Pogonophoraplural nounˌpəʊɡəˈnɒfərəˌpōɡəˈnäfərə Zoology A small phylum of long deep-sea worms which live in upright tubes of protein and chitin. They lack mouths and guts, subsisting mainly on the products of symbiotic bacteria. 〔动〕须腕门 Example sentencesExamples - Another phylum, the Pogonophora, are also vermiform animals with a trochophore larva.
- These include representatives of the Porifera, Mollusca, and possibly Arthropoda and Annelida or Pogonophora.
- For example, bacterial endosymbionts as found in the giant vent Pogonophora are also present in many meiofaunal oligochaetes, nematodes and flatworms.
- Both the frenulate pogonophoran clade and the vestimentiferan clade have been referred to as phyla, classes within the Annelida, classes within the Pogonophora, and subclasses within class Pogonophora within the Annelida.
- Two phyla that are probably close relatives of the Annelida, the Pogonophora and Echiura (spoon worms) are very rare as fossils, but all three groups belong to the larger group Trochozoa.
Derivativesnoun & adjective Zoology Both the frenulate pogonophoran clade and the vestimentiferan clade have been referred to as phyla, classes within the Annelida, classes within the Pogonophora, and subclasses within class Pogonophora within the Annelida. Example sentencesExamples - Calyptrina striata is characterized by regularly and widely spaced transverse organic bands and has been interpreted as a possible worm or pogonophoran tube.
- Tubes closely resembling those of pogonophoran worms are preserved in cold-seep carbonate at the Marmorito locality in the Italian Apennines.
- Transverse bands in C. striata, however, do not extend to form conspicuous flange structures; a pogonophoran interpretation for C. striata is therefore premature.
- Of the 1,579 aligned amino acid positions in the limited data set, 843 are completely conserved in the three annelids and the pogonophoran, and 650 are completely conserved in all nine taxa.
OriginModern Latin (plural), from Greek pōgōn 'beard' + pherein 'to bear'. Definition of Pogonophora in US English: Pogonophoraplural nounˌpōɡəˈnäfərə Zoology A small phylum of long deep-sea worms which live in upright tubes of protein and chitin. They lack mouths and guts, subsisting mainly on the products of symbiotic bacteria. 〔动〕须腕门 Example sentencesExamples - These include representatives of the Porifera, Mollusca, and possibly Arthropoda and Annelida or Pogonophora.
- Two phyla that are probably close relatives of the Annelida, the Pogonophora and Echiura (spoon worms) are very rare as fossils, but all three groups belong to the larger group Trochozoa.
- For example, bacterial endosymbionts as found in the giant vent Pogonophora are also present in many meiofaunal oligochaetes, nematodes and flatworms.
- Another phylum, the Pogonophora, are also vermiform animals with a trochophore larva.
- Both the frenulate pogonophoran clade and the vestimentiferan clade have been referred to as phyla, classes within the Annelida, classes within the Pogonophora, and subclasses within class Pogonophora within the Annelida.
OriginModern Latin (plural), from Greek pōgōn ‘beard’ + pherein ‘to bear’. |