Dinocaridida
Dinocaridida is a proposed extinct taxon of fossil arthropod-like marine animals found, with one exception, in the Cambrian and Ordovician. It is subdivided into the anomalocaridids and the opabinids....
Dinocaridida - Wikipedia
Graptolithinia
Graptolithina is a class in the animal phylum Hemichordata, the members of which are known as graptolites. Graptolites are fossil colonial animals known chiefly from the Upper Cambrian through the Lo...
Graptolithinia - Wikipedia
Temnocidaris
Temnocidaris is an extinct genus of echinoid that lived from the Late Cretaceous to the Paleocene. Its remains have been found in Europe and North America.
Temnocidaris - Wikipedia
Invertebrate paleontology
Invertebrate paleontology (also spelled Invertebrate palaeontology) is sometimes described as Invertebrate paleozoology or Invertebrate paleobiology.Whether it is considered to be a subfield of paleon...
Invertebrate paleontology - Wikipedia
Echinocorys
Echinocorys is an extinct genus of echinoid that lived from the Late Cretaceous to the Paleocene. Its remains have been found in Asia, Europe, and North America.
Echinocorys - Wikipedia
Pentremites
Pentremites is an extinct genus of blastoid echinoderm belonging to the family Pentremitidae.
These echinoderms could reach a height of about 11 centimetres (4.3 in). They were related to the...
Stichopites
Stichopites is an extinct genus of sea cucumber which existed during the Anisian age of the Middle Triassic to the Kimmeridgian age of the Late Jurassic (approximately 245.0 to 150.8 million years ago...
Staurocumites
Staurocumites is an extinct genus of sea cucumber which existed in Europe during the Triassic and Jurassic periods. The type species is Staurocumites bartensteini.
Diraphora
Diraphora is an extinct genus of brachiopod that lived in the Cambrian. Its remains have been found in Australia and North America. 664 specimens of Diraphora are known from the Greater Phyllopod bed,...
Stylophora
The stylophorans are an extinct, possibly polyphyletic group allied to the echinoderms, comprising the cornutes and mitrates. It is synonymous with the subphylum Calcichordata.The general stylophoran ...
Stylophora - Wikipedia
Doleorthis
Doleorthis is an extinct genus of brachiopod. It has two protective, grooved shells. It may have eaten small, planktonik animals, filtered from the water using a primitive baleen system. It was roughl...
Doleorthis - Wikipedia
Blastoid
Blastoids (class Blastoidea) are an extinct type of stemmed echinoderm. Often called sea buds, blastoid fossils look like small hickory nuts. They first appear, along with many other echinoderm classe...
Blastoid - Wikipedia
Dictyothyris
Dictyothyris is an extinct genus of brachiopod that lived from the Middle Jurassic to the Early Cretaceous in Europe.
Cambrian explosion
The Cambrian explosion, or less commonly Cambrian radiation, was the relatively short evolutionary event, beginning around 542 million years ago in the Cambrian Period, during which most major animal ...
Cambrian explosion - Wikipedia
Torellella
Torellella is a genus of problematic tubicolous fossils. They have slightly conical, phosphatic tubes with elliptical cross-section. Their fossils are known from the Cambrian.
Torellella - Wikipedia
Priscopedatus
Priscopedatus is an extinct genus of sea cucumber which existed in Poland during the Triassic period. The type species is Priscopedatus pyramidalis. It also contains the species Priscopedatus normani,...
Aaglacrinus
Aaglacrinus is an extinct species of crinoidea in the Cladia order. It has been proposed that it was a stationary (attached) suspension feeder the hard parts of which were composed of magnesium calcit...
Ancistrocrania
Ancistrocrania is an extinct genus of brachiopod from the Upper Cretaceous of Europe and North-America. The name is derived from the Greek words αγκιστρο (agkistro) "fish hook" and κρανίον (kranion) s...
Tylocidaris
Tylocidaris is an extinct genus of echinoid that lived from the Early Cretaceous to the Eocene. Its remains have been found in Europe and North America.
Marywadea
Marywadea is a genus of Ediacaran biota shaped like an oval with a central ridge. It is a bilaterian organism as evidenced by its symmetry. The fossil has an asymmetrical first chamber of the quilt. I...
Platystrophia
Platystrophia is an extinct genus of brachiopod that lived from the Ordovician to the Silurian in Asia, Europe, North America, and South America It has a prominent sulcus and fold. It usually lived in...
Kingena
Kingena is an extinct genus of brachiopod that lived from the Cretaceous to the early Paleocene in Antarctica, Europe, North America, and New Zealand.
Kingena - Wikipedia
Deltoblastus
Deltoblastus is a genus of blastoid echinoderm that lived in the Permian. Its fossils are known from Asia.
Ailsacrinus
Ailsacrinus is an extinct genus of crinoid from the Middle Jurassic of Europe.
Choia
Choia is a genus of extinct demosponge ranging from the Cambrian until the Lower Ordovician periods. Fossils of Choia have been found in the Burgess Shale in British Columbia; the Maotianshan shales ...
Choia - Wikipedia