pectostraca Synonyms
No Synonyms and anytonyms found
pectostraca Meaning
Webster
pectostraca (n. pl.)
A degenerate order of Crustacea, including the Rhizocephala and Cirripedia.
pectostraca Sentence Examples
- Pectostraca is a subclass of arthropods that includes the enigmatic sea scorpions.
- The exoskeleton of pectostracans consists of a fused head and thorax, forming a cephalothorax.
- Pectostracans possess a pair of lateral appendages at the posterior end of the cephalothorax, called opercula.
- The opercula of pectostracans serve primarily for respiration, facilitating the exchange of oxygen and carbon dioxide.
- Some extinct pectostracan species, such as eurypterids, reached enormous sizes and were formidable predators.
- The evolutionary relationships between pectostracans and other arthropod groups remain complex and uncertain.
- The fossil record of pectostracans provides valuable insights into the diversification of arthropods during the Paleozoic era.
- The pectostracan subphylum includes approximately 30 orders and over 300 genera.
- The largest known pectostracan fossil belongs to an eurypterid species that measured over 2 meters in length.
- Pectostracans are a fascinating group of extinct arthropods that offer a glimpse into the diversity and evolutionary history of the animal kingdom.
FAQs About the word pectostraca
A degenerate order of Crustacea, including the Rhizocephala and Cirripedia.
No synonyms found.
No antonyms found.
Pectostraca is a subclass of arthropods that includes the enigmatic sea scorpions.
The exoskeleton of pectostracans consists of a fused head and thorax, forming a cephalothorax.
Pectostracans possess a pair of lateral appendages at the posterior end of the cephalothorax, called opercula.
The opercula of pectostracans serve primarily for respiration, facilitating the exchange of oxygen and carbon dioxide.
