Agnatha - Wikipedia
Agnatha (/ ˈ æ ɡ n ə θ ə, æ ɡ ˈ n eɪ θ ə /; [3] from Ancient Greek ἀ-(a-) 'without' and γνάθος (gnáthos) 'jaws') is a paraphyletic infraphylum [4] of non-gnathostome vertebrates, or jawless …
Jawless Fish - Characteristics And Examples - AnimalWised
2019年9月2日 · Although most agnatha are now extinct, some have found unique and interesting ways to survive. Agnatha or jawless fish can be found in waters all over the world, and they …
agnathan - Encyclopedia Britannica
2024年9月20日 · agnathan, (superclass Agnatha), any member of the group of primitive jawless fishes that includes the lampreys (order Petromyzoniformes), hagfishes (order Myxiniformes), …
Agnatha or Jawless Fish: Everything You Need to Know - My …
2022年12月27日 · Agnatha are a group of jawless fish with few living species. Get to know these animals with us before they leave Earth altogether.
Cyclostomi - Wikipedia
Cyclostomi, often referred to as Cyclostomata / s ɪ k l oʊ ˈ s t ɒ m ə t ə /, is a group of vertebrates that comprises the living jawless fishes: the lampreys and hagfishes.
Gnathostomata - Wikipedia
Gnathostomata (/ ˌnæθoʊˈstɒmətə /; from Ancient Greek: γνάθος (gnathos) 'jaw' + στόμα (stoma) 'mouth') are the jawed vertebrates. Gnathostome diversity comprises roughly 60,000 species, …
29.2A: Agnathans- Jawless Fishes - Biology LibreTexts
2023年10月31日 · Jawless fishes or agnathans are craniates that represent an ancient vertebrate lineage that arose over one half-billion years ago. “Gnathos” is Greek for “jaw” and the prefix …
Jawless Vertebrates - Digital Atlas of Ancient Life
The vast majority of jawless vertebrate diversity (mostly represented by ostracoderm fishes and conodonts) is now extinct, but one clade—the eel-shaped cyclostomes (hagfish and …
Jawless Fish - Examples, Characteristics, Classification & Picture
2024年7月9日 · Jawless fish, belonging to the infraphylum Agnatha, are unique among vertebrates due to their lack of jaws. They possess long, cylindrical bodies devoid of paired …
Jawless Fish - SUNY Orange
Jawless Fish. Two jawless fish are known from the Early Cambrian. Myllokumingia had a head and trunk, a dorsal fin, a ventral fin (that might have been paired), 5-6 gill pouches, around 25 …