Blastoid definition of Blastoid in the Free Online Encyclopedia.

Blastoidea [bla′stȯid·ē·ə]

(paleontology)

A class of extinct pelmatozoan echinoderms in the subphylum Crinozoa.

Blastoidea

(or sea buds), a class of extinct invertebrate animals of the phylum Echinodermata. The body of the blastoid consisted of a crown formed by a blastoid calyx, or theca, with numerous “arms,” or brachioles, and a stem. The brachioles caught particles of food, which were directed to the mouth along sulci, or grooves, running from the brachioles to the ambulacra. Under the surface of the calyx was a system of calcareous tubes (hydrospires), which probably served for breathing. Blastoidea lived in the oceans from the Silurian to the Permian period. They were numerous in the Devonian and Early Carboniferous periods in North America and in the Permian period in Indonesia and the Ural Region. More than 300 species of Blastoidea are known. Some of them are the leading fossils of the Carboniferous and Permian periods.

REFERENCE

Osnovy paleontologii: Iglokozhie. . . . Moscow, 1964.

IU. A. ARENDT

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No references found	Mantle cell lymphoma involving skin: cutaneous lesions may be the first manifestation of disease and tumors often have blastoid cytologic features. Small lymphoid proliferations in extranodal locations by Rao, Dinesh S.; Said, Jonathan W. / Archives of Pathology & Laboratory Medicine It is composed of a proliferation of atypical lymphoid cells that range from typical to blastoid variants with diffuse or nodular patterns. Section on Pathology. (Abstracts of Scientific Posters) by Southern Medical Journal Many of the blastoid and crinoid stems are extremely thin and may not have been able to withstand high-energy currents. A case study in paleoecology from the Mississippian of Missouri, with ... by Brandenburg, J.P. / Transactions of the Missouri Academy of Science	blasting blasting agent blasting barrel blasting cap blasting fuse blasting gelatin blasting machine blasting mat Blasting Operations blasting powder blasto- Blastobacter Blastobasidae blastocarpous blastochyle Blastocladiales Blastocoel blastocoele blastocone Blastocyst blastocyte blastoderm Blastodisc blastodisk blastogranitic rock Blastoid Blastoidea Blastokinesis blastoma blastomere Blastomeres Blastomogenic Effect of Radiation Blastomycetes Blastomycosis blastomylonite blastopelitic blastophitic blastophore Blastopore blastoporphyritic blastopsammite blastopsephitic blastospore blastostyle blastotomy blastozooid Blastula Blastulation Blastus blat Blatant Beast	blastodermic vesicle blastodermic vesicle blastodermic vesicle blastodermic vessicle blastoderms blastoderms blastoderms Blastodiaceae blastodisc blastodisc blastodisc blastodisk blastodisk blastodisk blastoff blastoff blastogenesis blastogenesis blastogenetic blastogenetic blastogenic blastogenic blastogenic factor blastogenic factor blastogenic factor blastogenic factor blastogenic factor Blastogenic Response of Peripheral Lymphocytes blastogeny blastogranitic rock Blastoid blastoid transformation Blastoidea Blastoidea Blastoids blastokinesis Blastokinin blastolysis blastoma blastoma blastoma blastomas blastomas blastomas blastomas, blastomata blastomas, blastomata blastomas, blastomata blastomata blastomata blastomata blastomatoid lesion blastomatosis blastomatous blastomere blastomere blastomere blastomere biopsy Blastomere-Like Stem Cell Blastomeres Blastomeres Blastomeres

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Mantle cell lymphoma involving skin: cutaneous lesions may be the first manifestation of disease and tumors often have blastoid cytologic features.

Small lymphoid proliferations in extranodal locations by Rao, Dinesh S.; Said, Jonathan W. / Archives of Pathology & Laboratory Medicine

It is composed of a proliferation of atypical lymphoid cells that range from typical to blastoid variants with diffuse or nodular patterns.

Section on Pathology. (Abstracts of Scientific Posters) by Southern Medical Journal

Many of the blastoid and crinoid stems are extremely thin and may not have been able to withstand high-energy currents.

A case study in paleoecology from the Mississippian of Missouri, with ... by Brandenburg, J.P. / Transactions of the Missouri Academy of Science

Blastoidea (redirected from Blastoid)

REFERENCE

Blastoidea
(redirected from Blastoid)