A new cornute (Homalozoa: Echinodermata) from the uppermost Middle Cambrian (stage 3, Furongian) from Northern Iran: Its systematics and functional morphology

被引:8
作者
Rozhnov, S. V. [1 ]
Parsley, R. L. [2 ,3 ]
机构
[1] Russian Acad Sci, Borissiak Paleontol Inst, Profsoyuznaya Ul 123, Moscow 117997, Russia
[2] Tulane Univ, Dept Earth & Environm Sci, New Orleans, LA 70118 USA
[3] Smithsonian Inst, Dept Paleobiol, US Natl Museum, Washington, DC 20560 USA
基金
俄罗斯基础研究基金会;
关键词
Homalozoa; Persiacarpos; Middle Cambrian; Iran; GUIZHOU PROVINCE; STYLOPHORAN; CHINA;
D O I
10.1134/S0031030117050100
中图分类号
Q91 [古生物学];
学科分类号
0709 ; 070903 ;
摘要
A new rare nearly bilaterally symmetrical cornute from the Mila Formation, upper Middle-early Late Cambrian (Series 3, Furongian) from northern Iran is described, Persiacarpos jefferiesi gen. and sp. nov. It resembles Phyllocystis blayaci, but differs by the presence of the distal protrusion of M5 on the posterior end of the theca and by various sizes and patterns of the slightly bulging centralia. The animal appears to be mobile and probably moved in a tadpole-like wriggling manner. It may have fed with ambulacral cover plates open, using cover plates and/or podia for food capture, while the animal was in motion.
引用
收藏
页码:500 / 509
页数:10
相关论文
共 28 条
[1]   Convergent Evolution of Mechanically Optimal Locomotion in Aquatic Invertebrates and Vertebrates [J].
Bale, Rahul ;
Neveln, Izaak D. ;
Bhalla, Amneet Pal Singh ;
MacIver, Malcolm A. ;
Patankar, Neelesh A. .
PLOS BIOLOGY, 2015, 13 (04)
[2]   Palaeoanatomy and biological affinities of a Cambrian deuterostome (Stylophora) [J].
Clausen, S ;
Smith, AB .
NATURE, 2005, 438 (7066) :351-354
[3]   A unique edrioasteroid from the upper Middle Cambrian of Iran, its phylogenetic implications and paleoecology [J].
Guensburg, T. E. ;
Rozhnov, S. V. .
PALEONTOLOGICAL JOURNAL, 2014, 48 (04) :401-406
[4]  
Ivanova-Kazas O. M., 1978, SRAVNITELNAYA EMBRIO
[5]  
Jangoux M., 1982, Echinoderm nutrition
[6]  
Jefferies R.P.S., 1986, ANCESTRY VERTEBRATES
[7]  
JEFFERIES RICHARD PETER SPENCER, 1968, BULL BRIT MUS [NATUR HIST] GEOL, V16, P243
[8]  
Lefebvre B, 2005, ACTA PALAEONTOL POL, V50, P477
[9]   Functional morphology of stylophoran echinoderms [J].
Lefebvre, B .
PALAEONTOLOGY, 2003, 46 :511-555
[10]  
Parsley R.L., 1997, Paleontological Society Papers, V3, P225