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Cambroclavida - Zhijinitidae

Synonymy list
YearName and author
1984Yangtzechiton Yu p. 24
1984Luyanhaochiton Yu p. 25
2002Paracarinachites Sepkoski, Jr.
2010Paracarinachites Parkhaev and Demidenko p. 911

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classCambroclavidaConway Morris and Chen 1991
familyZhijinitidaeQian 1978

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

P. Y. Parkhaev and Y. Demidenko 2010"Elongated bilateral symmetrical sclerites curved downwards in crescent-like manner composed of several segments. Sclerite margins bent inwards. Borders of segments indistinct or obliterated. Outer surface of each segment bears spiny projection curved abapically. Spiny projections arranged in one subcentral row (P. sinensis and P. spinus), in two parallel rows (P. bispinosus), or in alternating manner in two rows (P. parabolicus). Internal concave surface of sclerite smooth. Usually apical part of sclerite narrowest and with strongest bent. Sclerite becomes wider towards rounded abapical side."