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Subphylum cephalochordata Stock Photos and Images

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Subphylum cephalochordata Stock Photos and Images

A fish-like animal that is a primitive chordate (animals with backbones) and a member of the subphylum Cephalochordata. Stock Photo
RMEJTPPK–A fish-like animal that is a primitive chordate (animals with backbones) and a member of the subphylum Cephalochordata.
Branchiostoma lanceolatum, Print, Branchiostoma lanceolatum (European lancelet, or Mediterranean amphioxus) is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate with a notochord but no backbone and is used as a model organism to study the evolutionary development of vertebrates., 1879 Stock Photo
RM2A2M3RP–Branchiostoma lanceolatum, Print, Branchiostoma lanceolatum (European lancelet, or Mediterranean amphioxus) is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate with a notochord but no backbone and is used as a model organism to study the evolutionary development of vertebrates., 1879
A fish-like animal that is a primitive chordate (animals with backbones) and a member of the subphylum Cephalochordata. Stock Photo
RMEJTPPX–A fish-like animal that is a primitive chordate (animals with backbones) and a member of the subphylum Cephalochordata.
Antique illustration of the lancelet. Vintage illustration of the lancelet. Antique picture of the lancelet. Cross section, figure legend. The lancelets , also known as amphioxi (singular: amphioxus), consist of some 30 to 35 species of 'fish-like' benthic filter feeding chordates in the order Amphioxiformes. They are the modern representatives of the subphylum Cephalochordata. Lancelets closely resemble 530-million-year-old Pikaia, fossils of which are known from the Burgess Shale. Zoologists are interested in them because they provide evolutionary insight into the origins of vertebrates. Lan Stock Photo
RM2K6TTE7–Antique illustration of the lancelet. Vintage illustration of the lancelet. Antique picture of the lancelet. Cross section, figure legend. The lancelets , also known as amphioxi (singular: amphioxus), consist of some 30 to 35 species of 'fish-like' benthic filter feeding chordates in the order Amphioxiformes. They are the modern representatives of the subphylum Cephalochordata. Lancelets closely resemble 530-million-year-old Pikaia, fossils of which are known from the Burgess Shale. Zoologists are interested in them because they provide evolutionary insight into the origins of vertebrates. Lan
Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Sea squirts are sessile animals: they remain firmly attached to substratum, such as rocks and shells. There ar Stock Photo
RMG16EEH–Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Sea squirts are sessile animals: they remain firmly attached to substratum, such as rocks and shells. There ar
. Animal biology. Zoology; Biology. 314 METAZOAN PHYLA manner of reproduction, returning to asexual reproduction and metagene- sis, which are found elsewhere only among the lower metazoan phyla. They also show a type of colonial life which is more characteristic of the lower phyla. Another striking phenomenon is the marked degeneration which takes place during metamorphosis. 339. Cephalochordata.—The type of this subphylum is the amphi- oxus, often called the lancelet (Fig. 207). It is a small marine animal reaching a length of but two or three inches and pointed at both ends. It is found on t Stock Photo
RMRN5H73–. Animal biology. Zoology; Biology. 314 METAZOAN PHYLA manner of reproduction, returning to asexual reproduction and metagene- sis, which are found elsewhere only among the lower metazoan phyla. They also show a type of colonial life which is more characteristic of the lower phyla. Another striking phenomenon is the marked degeneration which takes place during metamorphosis. 339. Cephalochordata.—The type of this subphylum is the amphi- oxus, often called the lancelet (Fig. 207). It is a small marine animal reaching a length of but two or three inches and pointed at both ends. It is found on t
Branchiostoma lanceolatum, Print, Branchiostoma lanceolatum (European lancelet, or Mediterranean amphioxus) is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate with a notochord but no backbone and is used as a model organism to study the evolutionary development of vertebrates., 1700-1880 Stock Photo
RM2A2M3RN–Branchiostoma lanceolatum, Print, Branchiostoma lanceolatum (European lancelet, or Mediterranean amphioxus) is a lancelet in the subphylum Cephalochordata. It is a marine invertebrate with a notochord but no backbone and is used as a model organism to study the evolutionary development of vertebrates., 1700-1880
Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Sea squirts are sessile animals: they remain firmly attached to substratum, such as rocks and shells. There ar Stock Photo
RMG16EEJ–Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Tunicata subphylum of sac-like marine invertebrate filter feeders. Sea squirts are sessile animals: they remain firmly attached to substratum, such as rocks and shells. There ar
. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Kinds of Vertebrates 17 III. A ROLL CALL OF CHORDATES Before proceeding further with a consideration of the comparative biology of the vertebrates, it is necessary to pass in brief review the different kinds of vertebrates between which comparisons are to be made. The phylum Chordata may be lined up in the following array: Subphylum I hemichordata Subphylum II urochordata Subphylum III cephalochordata Subphylum IV vertebrata (craniata) Class I Cyclostomata Stock Photo
RMRHK16P–. Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Kinds of Vertebrates 17 III. A ROLL CALL OF CHORDATES Before proceeding further with a consideration of the comparative biology of the vertebrates, it is necessary to pass in brief review the different kinds of vertebrates between which comparisons are to be made. The phylum Chordata may be lined up in the following array: Subphylum I hemichordata Subphylum II urochordata Subphylum III cephalochordata Subphylum IV vertebrata (craniata) Class I Cyclostomata
. Animal biology. Zoology; Biology. 320 METAZOAN PHYLA manner of reproduction, returning to asexual reproduction and metagene- sis, which are found elsewhere only among the lower metazoan phyla. They also show a type of colonial life which is more characteristic of the lower phyla. Another striking phenomenon is the marked degeneration which takes place during metamorphosis. 341. Cephalochordata.—The type of this subphylum is the amphi- oxus, often called the lancelet (Fig. 220). It is a small marine animal reaching a length of but two or three inches and pointed at both ends. It is found on t Stock Photo
RMRN5FN3–. Animal biology. Zoology; Biology. 320 METAZOAN PHYLA manner of reproduction, returning to asexual reproduction and metagene- sis, which are found elsewhere only among the lower metazoan phyla. They also show a type of colonial life which is more characteristic of the lower phyla. Another striking phenomenon is the marked degeneration which takes place during metamorphosis. 341. Cephalochordata.—The type of this subphylum is the amphi- oxus, often called the lancelet (Fig. 220). It is a small marine animal reaching a length of but two or three inches and pointed at both ends. It is found on t
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