NIGPAS OpenIR
Three-dimensionally preserved stem-group hexactinellid sponge fossils from lower Cambrian (Stage2) phosphorites of China
Luo, Cui1,2; Reitner, Joachim3
2019-06-01
Source PublicationPALZ
ISSN0031-0220
Volume93Issue:2Pages:187-194
AbstractThree-dimensionally, in situ preserved sponge fossils were collected from the phosphorites at the basal Niutitang Formation (Cambrian Stage 2) in Hunan Province, China. These fossils are preserved as nodular bodies in authigenic carbonaceous cherty Ca-phosphorites. Spicules are either completely embedded in cryptocrystalline phosphate or immediately overgrown by early isopachous phosphate cements, leaving the remaining interspace filled by other deposits. Two specimens are described in detail as examples. One is composed of hexactins of at least three size-hierarchies, the small spicules in which may be interpreted as microscleres. The other, investigated using grinding tomography, shows a skeletal frame composed of pentactins, hexactins, and diactins. These spicules exhibit a weak pattern of perpendicular orientation in 3D space and a possible differentiation of hypodermalia and parenchymalia. These skeletal architectures belong to new taxonomic groups and seem to represent very basic forms of hexactinellids. Disarticulated spicules scattered in other parts of the investigated phosphorites indicate a still unexplored diversity of the fossil community, and some show combined features, which were regarded characteristic and mutually exclusive in living hexactinellids and demosponges. This work suggests that the lower Cambrian phosphorite Lagerstatten have a great potential to preserve details of the early evolutionary history of sponges.
KeywordSponges Hexactinellida Phosphorite Cambrian Niutitang Formation Hunan China
DOI10.1007/s12542-018-00441-y
Language英语
WOS KeywordPB ZIRCON AGES ; SOUTH CHINA ; YANGTZE PLATFORM ; GEOCHEMISTRY ; DEMOSPONGES ; EVOLUTION ; ANHUI
Funding ProjectNational Natural Science Foundation of China[41602001] ; Chinese Academy of Sciences[XDPB05] ; CAS Key Laboratory of Economic Stratigraphy and Palaeogeography (NIGPAS) ; German Excellence Initiative (Gottingen Courant Center)
WOS Research AreaPaleontology
WOS SubjectPaleontology
WOS IDWOS:000469406100001
Funding OrganizationNational Natural Science Foundation of China ; Chinese Academy of Sciences ; CAS Key Laboratory of Economic Stratigraphy and Palaeogeography (NIGPAS) ; German Excellence Initiative (Gottingen Courant Center)
PublisherSPRINGER HEIDELBERG
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/38540
Collection中国科学院南京地质古生物研究所
Corresponding AuthorReitner, Joachim
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, CAS Key Lab Econ Stratig & Palaeogeog, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, 39 East Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Gottingen, Ctr Geosci, Dept Geobiol, Goldschmidtstr 3, D-37077 Gottingen, Germany
Recommended Citation
GB/T 7714
Luo, Cui,Reitner, Joachim. Three-dimensionally preserved stem-group hexactinellid sponge fossils from lower Cambrian (Stage2) phosphorites of China[J]. PALZ,2019,93(2):187-194.
APA Luo, Cui,&Reitner, Joachim.(2019).Three-dimensionally preserved stem-group hexactinellid sponge fossils from lower Cambrian (Stage2) phosphorites of China.PALZ,93(2),187-194.
MLA Luo, Cui,et al."Three-dimensionally preserved stem-group hexactinellid sponge fossils from lower Cambrian (Stage2) phosphorites of China".PALZ 93.2(2019):187-194.
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