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Yanhecerida is a
small order of Late
Cambrian (mid-Stage 10)
nautiloid cephalopods. They were
similar to the more
diverse Plectronocerida and Ellesmerocerida...
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exclusively Cambrian cephalopod orders: Plectronocerida, Protactinocerida, and
Yanhecerida.
Under some
classification schemes, the
plectronoceratoid grade may also...
- They are: †Plectronoceratoidea = †Plectronocerida, †Protactinocerida, †
Yanhecerida, and †Ellesmerocerida. †Endoceratoidea = †Endocerida †Orthoceratoidea...
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three Upper Cambrian orders, the Plectronocerida, Protactinocerida, and
Yanhecerida;
separation of the
pseudorthocerids as the Pseudorthocerida, and elevating...
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apparently present in some
members of the
earlier cephalopod orders Yanhecerida and Ellesmerocerida.
Unlike true endocerids, the
simple endocones of...
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plectronoceratoid orders, the
Ellesmerocerida and
Protactinocerida and
Yanhecerida. The
Plectronoceratidae gave rise to the
other ellesmerocerid families...
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Cephalopods of
North China -- Plectronocerida,
Protactinocerida (Ord Nov) and
Yanhecerida (Ord Nov) Chen, J. Y.; Teichert, C. (1983). "Cambrian cephalopods". Geology...
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Cephalopods of
North China, Plectroncerida,
Protactinocerida (Ord, Nov.) and
Yanhecerida (Ord, Nov.) Acta
Palaeontologica Sinica, 1979-02 [1] Wen-tang Shang,...
- and two
orders introduced by Chen and
Teichert in 1983, the
Cambrian Yanhecerida and Protactinocerida. The Plectronocerida, also Cambrian,
includes forms...
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cephalopods of
North China. Plectronocerida,
Protactinocerida (ord. nov.) and
Yanhecerida (ord. nov.)". Acta
Palaeontologica Sinica. 18: 15. Chen & Qi (1979)....
