jawless
Without biting bones
Jawless describes something lacking a jaw.
In zoology, jawless fishes (lampreys and hagfish) belong to an ancient lineage that never developed hinged jaws: Jawless vertebrates preceded jawed fish by millions of years.
Applied to people, jawless suggests a weak or receding chin, often implying lack of character or resolve.
Jawless parasitic fish
- hagfishJawless, slime-producing marine fish
- eel-likeElongated and sinuous
- slimeThick wet gunk
- parasiticExploiting a host organism
bloodsucker · cartilaginous · notochord · marine · freshwater · vertebrate · mucus · finless
Having no teeth
feeding · cartilage · notochord · pharynx · gullet · ingest · swallow · filter
Without means to resist
- exposedOut in open
- helplessUnable to act independently
- unprotectedWithout safeguard or shield
- weakLacking power or force
susceptible · prey · biteless · toothless · unarmed · passive · docile · harmless
Preserved ancient organism traces
- paleontologyStudy of ancient organisms
- CambrianEarliest Paleozoic period
- OrdovicianPaleozoic geological period
- SilurianPaleozoic period, mid-range
Devonian · Paleozoic · ancestral · phylogeny · diversification · extinct · ancestors · adaptation
lamprey
Jawless parasitic fish
parasitic · bloodsucker · cartilaginous · notochord · marine · freshwater · vertebrate · mucus · finless · basal
toothless
Having no teeth
oral · feeding · cartilage · notochord · pharynx · gullet · ingest · swallow · filter
defenseless
Without means to resist
- exposedOut in open
- helplessUnable to act independently
- unprotectedWithout safeguard or shield
weak · susceptible · prey · biteless · toothless · unarmed · passive · docile · harmless · nonthreatening
fossils
Preserved ancient organism traces
- paleontologyStudy of ancient organisms
- CambrianEarliest Paleozoic period
- OrdovicianPaleozoic geological period
Silurian · Devonian · Paleozoic · ancestral · phylogeny · diversification · extinct · ancestors · adaptation · fossil record
- jawless fishFish without movable mouthparts
jaw, jaws, jaws of life, jawbone, jawed, jawing, jawline, jawbreaker, lockjaw