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Blastozoa is a subphylum of extinct echinoderms characterized by the presence of specialized respiratory structures and brachiole plates used for feeding. [1] It ranged from the Cambrian to the Permian .
Download QR code; Print/export Download as PDF; Printable version; ... Pages in category "Blastozoa" The following 10 pages are in this category, out of 10 total.
While once considered to be a formal class, the diploporitans likely represent a polyphyletic group. [3] The evidence for this claim lies within the highly morphologically diverse body plans of the diploporitans: there are major differences in the makeup of the attachment structure (e.g., stem or holdfast), in the makeup of the feeding grooves, and even major differences in the construction of ...
The Eocrinoidea were an extinct class of echinoderms that lived between the Early Cambrian and Late Silurian periods. They are the earliest known group of stalked, brachiole-bearing echinoderms, and were the most common echinoderms during the Cambrian.
The concept of Cystoidea has a complex history, with many emendations from its original conception. Early versions included the homalozoans, eocrinoids, paracrinoids, blastoids, and edrioblastoids.
The starting point, that is the time from which these codes are in effect (usually retroactively), varies from group to group, and sometimes from rank to rank. [7] In botany and mycology, the starting point is often 1 May 1753 (Linnaeus, Species plantarum).
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The yeast mitochondrial code; The mold, protozoan, and coelenterate mitochondrial code and the mycoplasma/spiroplasma code; The invertebrate mitochondrial code; The ciliate, dasycladacean and hexamita nuclear code; The deleted kinetoplast code; cf. table 4. deleted, cf. table 1. The echinoderm and flatworm mitochondrial code; The euplotid ...