Amphioxus
Definition
The common or historical scientific name (genus Amphioxus) used in zoology to designate the lancelet (scientifically known as Branchiostoma lanceolatum), a small, translucent, lance-shaped marine invertebrate belonging to the Chordata phylum (subphylum Cephalochordata). It represents a fundamental reference organism in the study of comparative anatomy and vertebrate evolution, as it retains a simple structural dorsal notochord throughout its entire life cycle without developing a bony vertebral column.
Bilingual Equivalents
- Amphioxus
- Lancelet
Grammatical & Source Details
| Inflection Type | Countable masculine noun with standard regular plural variations across zoological and evolutionary literature. |
| Formation | Scientific nomenclature coined from ancient Greek roots for two-sided sharpness, matching its distinct double-pointed body layout. |
| Spelling / Pronunciation | [ˌæm.fi.ˈɒk.səs] |
| Source | International Code of Zoological Nomenclature (ICZN) and Comparative Vertebrate Morphology Manuals |
Contextual Usage Examples
RO: Un specimen de amphioxus trăiește îngropat în nisipul fin al mărilor calde, lăsând doar extremitatea anterioară afară pentru a filtra hrana.
EN: An amphioxus specimen lives buried inside the fine sand of warm seas, leaving only its anterior extremity exposed to filter food.
RO: Studiul microscopic al larvei de amphioxus a relevat prezența fantelor branhiale și a tubului neural dorsal.
EN: The microscopic study of the amphioxus larva revealed the presence of pharyngeal gill slits and a dorsal neural tube.
RO: Deși nu este un pește adevărat, acest amphioxus este considerat veriga de legătură dintre nevertebrate și primele vertebrate.
EN: Although it is not a true fish, this amphioxus is considered the evolutionary bridge linking invertebrates to the earliest vertebrates.
Idioms & Phrases
Notocorda de amphioxus / Amphioxus notochord
RO: Axa scheletică elastică axială elastică ce parcurge întregul corp al lăncierului, oferindu-i suport structural în timpul înotului.
EN: The axial elastic skeletal axis running through the entire body of the lancelet, providing structural support during swimming pulses.
Anatomia unui amphioxus / Amphioxus internal anatomy
RO: Configurație biologică primitivă caracterizată prin absența unei inimi adevărate, a creierului protejat de craniu și a ochilor complecși.
EN: A primitive biological layout defined by the total absence of a true heart, a skull-protected brain, and complex camera eyes.
Branchiostoma (Amphioxus) / Genus Branchiostoma
RO: Denumirea taxonomică validă curentă care a înlocuit vechiul gen generic utilizat istoric în cataloagele de biologie animală.
EN: The current valid taxonomic name that replaced the old generic designation historically used inside animal biology catalogs.
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