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Muensterelloidea
Muensterelloidea is a superfamily (or clade) of stem-octopod cephalopods from the Early Jurassic to Late Cretaceous. Two families are currently identified, Muensterellidae, and Patelloctopodidae. The clade is the ancestral group from which modern octopus arose. Description Overall Soft tissue anatomy within the Muensterelloidea is well-documented. Muenster (1842), who first recorded the holotype specimen of ''Muensterella'', noted its egg-shaped anatomy and apparent lack of swimming fins.Fuchs, D., Keupp, H., & Engeser, T. (2003). New records of soft parts of Muensterella scutellaris Muenster, 1842 (Coleoidea) from the Late Jurassic Plattenkalks of Eichstätt and their significance for octobrachian relationships. Berliner Paläobiologische Abhandlungen, 3, 101-111. Indeed, in all preserved specimens the same body structure is present, with all lacking a distinct swimming fin. Fuchs ''et al.'' (2003) suggested it possessed marginal fins, as a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octopus
An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Like other cephalopods, an octopus is bilaterally symmetric with two eyes and a beaked mouth at the center point of the eight limbs. The soft body can radically alter its shape, enabling octopuses to squeeze through small gaps. They trail their eight appendages behind them as they swim. The siphon is used both for respiration and for locomotion, by expelling a jet of water. Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviourally diverse of all invertebrates. Octopuses inhabit various regions of the ocean, including coral reefs, pelagic waters, and the seabed; some live in the intertidal zone and others at abyssal depths. Most species grow quickly, mature ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muensterellidae
Muensterellidae is a family of stem-octopod cephalopods from the Late Jurassic to Late Cretaceous. Phylogeny Muensterellidae is one of two families in the superfamily Muensterelloidea along with the Patelloctopodidae. The muensterelloids are characterized by having a roughly spoon-shaped end of the gladius ''Gladius'' () is a Latin word meaning "sword" (of any type), but in its narrow sense it refers to the sword of ancient Roman foot soldiers. Early ancient Roman swords were similar to those of the Greeks, called '' xiphe'' (plural; singular ''xi ... called the patella. This type of gladius is likely ancestral to the gladius remnants of modern octopuses. References {{Taxonbar, from=Q30434538 Octopuses Prehistoric cephalopod families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octopuses
An octopus ( : octopuses or octopodes, see below for variants) is a soft-bodied, eight- limbed mollusc of the order Octopoda (, ). The order consists of some 300 species and is grouped within the class Cephalopoda with squids, cuttlefish, and nautiloids. Like other cephalopods, an octopus is bilaterally symmetric with two eyes and a beaked mouth at the center point of the eight limbs. The soft body can radically alter its shape, enabling octopuses to squeeze through small gaps. They trail their eight appendages behind them as they swim. The siphon is used both for respiration and for locomotion, by expelling a jet of water. Octopuses have a complex nervous system and excellent sight, and are among the most intelligent and behaviourally diverse of all invertebrates. Octopuses inhabit various regions of the ocean, including coral reefs, pelagic waters, and the seabed; some live in the intertidal zone and others at abyssal depths. Most species grow quickly, mature early, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teudopseina
The Teudopseina is a clade of stem- octopods that first evolved in the Toarcian,Fuchs, Dirk & Weis, Robert. (2010). Taxonomy, morphology and phylogeny of Lower Jurassic teudopseid coleoids (Cephalopoda). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 257. 351-366. 10.1127/0077-7749/2010/0083. considered the largest clade of gladius-bearing coleoids in the Mesozoic. Up to five families are known, among which the Trachyteuthidae, ''Trachyteuthis'' in particular, were the most abundant.Tree of Life Project: Teudopseina ''Tree of Life Web Project''. Retrieved 2022-01-15. Description The Teudopseina can be united by five primary traits. These are the presence of a |
Patelloctopodidae
Patelloctopodidae is a family of stem-octopod cephalopods from the Middle and Late Jurassic of Europe. Five genera are currently placed in the family, '' Etchesia, Muenstellerina,'' '' Patelloctopus,'' '' Pearciteuthis'' and '' Tyrionella,'' Patelloctopodidae is one of two families in the superfamily Muensterelloidea along with the Muensterellidae Muensterellidae is a family of stem-octopod cephalopods from the Late Jurassic to Late Cretaceous. Phylogeny Muensterellidae is one of two families in the superfamily Muensterelloidea along with the Patelloctopodidae. The muensterelloids are c .... References Octopuses Prehistoric cephalopod fam ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muensterella
Muensterella is a fossil stem-octopod known from a handful of specimens from German Solnhofen plattenkalk Plattenkalk is a very finely grained limestone chemically precipitated in a stratified water column under conditions where bioturbation does not occur. The reasons for the quiet depositional environment and the processes of sediment accumulation v ....Coleoid cephalopods through time (Warnke K., Keupp H., Boletzky S. v., eds) Berliner Paläobiol. Abh. 03 101-111 Berlin 2003 NEW RECORDS OF SOFT PARTS OF MUENSTERELLA SCUTELLARIS MUENSTER, 1842 (COLEOIDEA) FROM THE LATE JURASSIC PLATTENKALKS OF EICHSTÄTT AND THEIR SIGNIFICANCE FOR OCTOBRACHIAN RELATIONSHIPS D. Fuchs*, H. Keupp & Th. Engeser References Prehistoric cephalopod genera {{Paleo-cephalopod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastropod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopoda
A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles (muscular hydrostats) modified from the primitive molluscan foot. Fishers sometimes call cephalopods "inkfish", referring to their common ability to squirt ink. The study of cephalopods is a branch of malacology known as teuthology. Cephalopods became dominant during the Ordovician period, represented by primitive nautiloids. The class now contains two, only distantly related, extant subclasses: Coleoidea, which includes octopuses, squid, and cuttlefish; and Nautiloidea, represented by ''Nautilus'' and ''Allonautilus''. In the Coleoidea, the molluscan shell has been internalized or is absent, whereas in the Nautiloidea, the external shell remains. About 800 living species of cephalopods have been identified. Tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celaenoteuthis
''Celaenoteuthis'' is a genus of muensterellid stem-octopod from southern Germany. It is monotypic, with only type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ... ''C. incerta'' known.Naef, A: 1922 "ie fossilen Tintenfische – Eine pal€aozoologische Monographie." Gustav Fischer, Jena 322 pp. References {{Taxonbar, from=Q107304037 Taxa described in 1922 Octopuses Prehistoric cephalopod genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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