英语词汇“jawless vertebrate”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

WORD FAMILY

jawless vertebrate

n eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms

Syn|Hypo|Hyper

agnathan, jawless fish

ostracoderm

extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic

heterostracan

extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian

cephalaspid, osteostracan

extinct jawless fish of the Devonian with armored head

anaspid

extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian

conodont

small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes

cyclostome

primitive aquatic vertebrate

lamper eel, lamprey, lamprey eel

primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue

hag, hagfish, slime eels

eellike cyclostome having a tongue with horny teeth in a round mouth surrounded by eight tentacles; feeds on dead or trapped fishes by boring into their bodies

Petromyzon marinus, sea lamprey

large anadromous lamprey sometimes used as food; destructive of native fish fauna in the Great Lakes

Myxine glutinosa

typical hagfish

eptatretus

a fossil hagfish of the genus Eptatretus

Myxinikela siroka

fossil hagfish of the Pennsylvanian period (c. 300 million years ago) that resembled modern hagfishes

aquatic vertebrate

animal living wholly or chiefly in or on water

单词	jawless vertebrate
释义	jawless vertebrate (extremely rare) n WORD FAMILY jawless vertebrate n eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms Syn\|Hypo\|Hyper agnathan, jawless fish ostracoderm extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic heterostracan extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian cephalaspid, osteostracan extinct jawless fish of the Devonian with armored head anaspid extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian conodont small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes cyclostome primitive aquatic vertebrate lamper eel, lamprey, lamprey eel primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue hag, hagfish, slime eels eellike cyclostome having a tongue with horny teeth in a round mouth surrounded by eight tentacles; feeds on dead or trapped fishes by boring into their bodies Petromyzon marinus, sea lamprey large anadromous lamprey sometimes used as food; destructive of native fish fauna in the Great Lakes Myxine glutinosa typical hagfish eptatretus a fossil hagfish of the genus Eptatretus Myxinikela siroka fossil hagfish of the Pennsylvanian period (c. 300 million years ago) that resembled modern hagfishes aquatic vertebrate animal living wholly or chiefly in or on water
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