The first fish lineages belong to the Agnatha, or jawless fish. Early examples include Haikouichthys. During the late Cambrian, eel-like jawless fish called the conodonts, and small mostly armoured fish known as ostracoderms, first appeared. Most jawless fish are now extinct; but the extant lampreys may

Sep 12, 2024 · Determining when the first fish appeared on Earth isn’t a matter of pinpointing one single fossil. Instead, it’s a journey through the fossil record, revealing a step-by-step transformation from early chordates to jawless vertebrates, and finally, to the development of …

Jul 18, 2022 · The oldest fossils of animals resembling a fish date back between 518 million and 530 million years ago. Discovered in China and called Haikouichthys, these animals were about an inch long (2.5 cm) and had a head with seven to eight slits at its base that looked like gills.

2 days ago · The first fish-like creatures were jawless fish called Agnatha, such as Haikouichthys, which appeared during the Cambrian period. How did jaws evolve in fish? Jaws are believed to have evolved from the skeletal supports of the gill arches, structures that originally supported the gills. These supports gradually modified into hinged jaws ...

Although Pikaia is not actually "first vertebrate" or "first fish", this is still an important organism to show the early forms of chordates. Pikaia is a genus that appeared about 530 Ma during the Cambrian explosion of multicellular life.

Aug 31, 2022 · Haikouichthys (HIGH-koo-ICK-thiss) is a prehistoric fish and an extinct genus of Craniate or animals with a skull or cranium. Not only is Haikouichthys the first fish that ever lived on Earth, but it’s also the oldest-known vertebrae (backboned animal).

Jan 17, 2025 · The first fish lineages belong to the Agnatha, or jawless fish, and early examples include Haikouichthys. During the late Cambrian period, eel-like jawless fish called conodonts and small mostly armoured fish known as ostracoderms first appeared.

Jun 11, 2014 · The first fossil fishes are known from scant and often ambiguous fossil remains, and research published today in Nature gives us the first clear picture of exactly what these earliest fishes...

Nov 24, 2022 · When did first fish appear on Earth? The first vertebrates on Earth were fish, and scientists believe they first appeared around 480 million years ago. But fossil records from this time are spotty, with only small fragments identified.

Nov 9, 2022 · What was the first fish discovered? The oldest fossils of animals resembling a fish date back between 518 million and 530 million years ago. Discovered in China and called Haikouichthys, these animals were about an inch long (2.5 cm) and had a head with seven to eight slits at its base that looked like gills.