WebThe Clitellata are a class of annelid worms, characterized by having a clitellum - the 'collar' that forms a reproductive cocoon during part of their life cycles. The clitellates comprise around 8,000 species. Unlike the class of Polychaeta, they do not have parapodia and their heads are less developed.

WebLumbricus rubellus is a species of earthworm that is related to Lumbricus terrestris.It is usually reddish brown or reddish violet, iridescent dorsally, and pale yellow ventrally. They are usually about 25 millimetres (0.98 in) to 105 millimetres (4.1 in) in length, with around 95–120 segments.

WebThis list of Australian species extinct in the Holocene covers extinctions from the Holocene epoch, a geologic epoch that began about 11,650 years before present (about 9700 BCE) and continues to the present day.. Most Australian megafauna disappeared considerably earlier than in other continental landmasses, in the Late Pleistocene. As a result, most …

WebLumbriculus variegatus, also known as the blackworm or California blackworm, is a species of worm inhabiting North America and Europe.It lives in shallow-water marshes, ponds, and swamps, feeding on microorganisms and organic material. The maximum length of a specimen is 10 cm (4 in). Worms raised in laboratory environment are slightly …

WebA craniate is a member of the Craniata (sometimes called the Craniota), a proposed clade of chordate animals with a skull of hard bone or cartilage.Living representatives are the Myxini (hagfishes), Hyperoartia (including lampreys), and the much more numerous Gnathostomata (jawed vertebrates). Formerly distinct from vertebrates by including …

WebDie Gürtelwürmer (Clitellata) sind eine Klasse der Ringelwürmer.Sie umfassen wenigstens 3800 Arten, die eine natürliche (monophyletische) Einheit bilden.Zu ihnen gehören so bekannte Formen wie die Regenwürmer oder die Blutegel.

WebMimi atau Belangkas (suku Limulidae) mencakup empat jenis hewan beruas yang menghuni perairan dangkal wilayah paya-paya dan kawasan mangrove.Kesemuanya merupakan anggota suku Limulidae dan menjadi satu-satunya wakil dari bangsa Xiphosurida yang masih sintas di bumi. Cetakan fosil hewan ini tidak mengalami …

WebProtostomia (/ ˌ p r oʊ t ə ˈ s t oʊ m i. ə /) is the clade of animals once thought to be characterized by the formation of the organism's mouth before its anus during embryonic development.This nature has since been discovered to be extremely variable among Protostomia's members, although the reverse is typically true of its sister clade, …

WebThis list of Australian species extinct in the Holocene covers extinctions from the Holocene epoch, a geologic epoch that began about 11,650 years before present (about 9700 BCE) and continues to the present day.. Most Australian megafauna disappeared considerably earlier than in other continental landmasses, in the Late Pleistocene. As a result, …

WebIn biology, a kingdom (Latin: regnum, plural regna) is the second highest taxonomic rank, just below domain.Kingdoms are divided into smaller groups called phyla.. Traditionally, some textbooks from the United States and Canada used a system of six kingdoms (Animalia, Plantae, Fungi, Protista, Archaea/Archaebacteria, and Bacteria/Eubacteria) …