A5033219911- Paleontology and Stratigraphy of Fossils
- Evolution and Paleontology Studies
- Paleontology and Evolutionary Biology
- Geology and Paleoclimatology Research
- Morphological variations and asymmetry
- Geological and Geophysical Studies
- Geological formations and processes
- Marine Biology and Ecology Research
- Marine Biology and Environmental Chemistry
- Diatoms and Algae Research
- Fossil Insects in Amber
- Geological Studies and Exploration
Hanjiang Normal University
2024
Lingnan Normal University
2024
Northwest University
2011-2022
Nanjing Institute of Geology and Paleontology
2014-2021
Chinese Academy of Sciences
2014-2021
University of California, Riverside
2021
Indian Statistical Institute
2021
University of Padua
2021
State Key Laboratory of Continental Dynamics
2019-2021
Continental (United Kingdom)
2015
A treasure trove of Cambrian secrets Animal life exploded in diversity and form during the period about 500 million years ago. Fu et al. describe an early fossil site China that contains a variety specimens, more than half which are previously undescribed (see Perspective by Daley). The rivals described sites, such as Burgess Shale, should help to elucidate biological innovation diversification this period. Science , issue p. 1338 ; see also 1284
Abstract: The morphology and ontogeny of the eodiscid trilobite Tsunyidiscus acutus Sun is described on basis numerous calcified specimens collected from Lower Cambrian Shuijingtuo Formation in Yichang Changyang, Hubei Province, South China. An ontogenetic series established based articulated material including previously unknown protaspides meraspides (degrees 0 1). material, revealing some prominent morphological changes such as number pygidial axial rings, genal spines retained throughout...
A detailed exploration of growth and trunk segmentation the oryctocephalid trilobite, Duyunaspis duyunensis Chang & Chien in Zhou et al. 1977, from lower Cambrian (Stage 4, Series 2) Balang Formation western Hunan Province, South China, is presented. Because excellent preservation, complete post-protaspid ontogenetic series merapsid degree 0 to holaspid phase described. The reveals new information on morphological changes such as migration posterior branch facial sutures (from proparian...
A detailed investigation of the morphology and ontogeny redlichioid trilobite Eoredlichia intermediata (Bulletin Geological Society China, 3–4, 1940, 333) from lower Cambrian Yu'anshan Member Heilinpu Formation, in Kunming, Yunnan Province, southwest is presented. The new material comprises a relatively complete ontogenetic series ranging early meraspid to holaspid period, which reveals more details on morphological variation such as appearance bacculae some specimens, contraction...
New material collected from black shale of the lower Cambrian Shuijingtuo Formation in Changyang County Hubei Province, South China, allows a study on morphology and ontogeny trilobite Estaingia sinensis (Chang, 1953).Two protaspid stages can be defined basis numerous well-preserved complete specimens, subsequent ontogenetic are described largely based cranidia, which reveal prominent morphological changes such as shortening frontal glabellar lobe, disappearance fixigenal spine...
The concept of the agnostoid arthropod species Lotagnostus americanus (Billings, 1860), which has been reported from numerous localities in upper Furongian Series (Cambrian) Laurentia, Gondwana, Baltica, Avalonia, and Siberia, is reviewed with emphasis on morphologic taphonomic information afforded by large collections Hunan South China, Xinjiang Northwest Zhejiang Southeast China.Comparisons are made type topotype material Quebec, Canada, as well elsewhere USA, United Kingdom, Sweden,...
Abstract Restudy of the limestone slab containing type suite Arthricocephalus chauveaui Bergeron, 1899 (Trilobita), species 1899, shows that specimens three species, each representing a separate genus, are present on and were likely included in original concept species. Besides A . , contains Oryctocarella duyunensis (Qian, 1961) Duyunaspis Zhang Qian Zhou et al., 1977. Bergeron (1899) illustrated one exoskeleton from only apparently based much his written description specimen. This specimen...
The first appearance datum (FAD) of the cosmopolitan agnostoid trilobite Lotagnostus americanus is a widely used marker for defining base uppermost stage Cambrian System. Detailed field study on L. americanus-bearing interval Wa'ergang section, Hunan, China, reveals FAD to be 29.65 m above Shengjiawan Formation. This horizon close lowest known occurrences intercontinentally distributed polymerid trilobites Hedinaspis regalis and Charchaqia norini. section has strong potential as candidate...
The post-protaspid ontogenetic series of the eodiscinid trilobite Tsunyidiscus yanjiazhaiensis S. Zhang et al. in Yin & Li, Citation1978 is described, on basis crack-out specimens including numerous articulated and a large number disarticulated sclerites from lower Cambrian (Stage 3, Series 2) Shuijingtuo Formation, Zhenba County, Shaanxi Province, South China. In addition, hundreds phosphatized assigned to this species were obtained by dilute acetic acid dissolution thin-bedded limestones...
Abstract: A large number of complete specimens together with numerous disarticulated sclerites the eodiscinid trilobite Sinodiscus changyangensis Zhang in Zhou et al. , 1977 have been collected from lower Cambrian Shuijingtuo Formation Changyang, Hubei Province, South China. An ontogenetic series is established based on immature and mature exoskeletons including previously unknown protaspides meraspides, particular. No further substages can be differentiated protaspid herein. Changes that...
A number of immature and mature exoskeletons allow the first detailed description ontogeny early Cambrian redlichiid trilobite Metaredlichia cylindrica , from black shale Shuijingtuo Formation in Hubei Province, South China. The material includes numerous complete protaspides, within which two stages can be differentiated according to appearance a shallow furrow that separates protopygidial area protocranidium. Also, identification subsequent ontogenetic stages, including meraspides...
Abstract A short stratigraphic interval near Bulin in western Hunan (China) yields multiple specimens of the ~514-Myr-old oryctocarine trilobite Oryctocarella duyunensis . Size data obtained from these indicate that, meraspid degree 1 onward, degrees represent successive instars. Meraspid growth persisted until a terminal stage was reached, providing first example determinate trilobites and, notably, an early Cambrian species. The sample contains three varieties such stages, recognized as...
Abstract Abundant articulated specimens of the oryctocarine trilobite Oryctocarella duyunensis from lower Cambrian (Stage 4, Series 2) Balang Formation at Bulin section in western Hunan Province, South China, permit description all meraspid degrees. The maximum number thoracic segments observed this collection is 11. Meraspid growth was accompanied by progressive and gradual change overall form, animal showed an homonymously segmented trunk with variation pygidial during ontogeny. Such...
Zhang, X.-L., Fu, D.-J. & Dai, T., March 2012. A new species of Kangacaris (Arthropoda) from the Chengjiang lagerstätte, lower Cambrian, southwest China. Alcheringa 36, 23–25. ISSN 0311-5518. shui is erected, having a smaller hypostome, better defined and narrower axis, more arched posterior margin cephalic shield, posterolaterally deflected pleural areas thoracic segments, pygidium than established species. The record extends range this Cambrian genus Australia to
Completely enrolled, phosphatized, 3-D specimens of the eodiscinid trilobite Tsunyidiscus yanjiazhaiensis from Cambrian Stage 3 South China exhibit much morphological detail and show variation in delicate coaptative structures associated with their trunk segmentation. The relationship between enrolment mechanism segmentation during ontogeny confirms a unique developmental pattern among early eodiscoid trilobites, revealing how these animals controlled rate segment increase release...
Click to increase image sizeClick decrease size Acknowledgements We are grateful S.-C. Peng for helpful advice and G. Edgecombe N. Hughes valuable comments on a previous version of the manuscript. Financial support from Major Basic Research Project Ministry Science Technology China (Grant: 2006CB806400), Natural Foundation Programs New Century Excellent Talents (NCET) is greatly acknowledged.
ABSTRACT The developmental mode of four redlichiid trilobites is summarized, based upon exceptionally well‐preserved, articulated specimens from Cambrian Series 2 (stages 3 and 4) strata in southwestern China South Australia. These relatively complete sequences indicate a balanced rate segment increase addition to the thorax during meraspid phase, which might explain why most redlichiids possess micropygous body patterning ontogeny. In addition, an analysis size distribution, strategy,...
The temporal range of eodiscids and agnostoid arthropods overlaps with several early Paleozoic geological events evolutionary significance. However, the responses agnostids to these how perturbations associated them (both abiotic and/or biotic) may have impacted remain uncertain. To address this uncertainty, we employ geometric morphometrics reconstruct morphospace occupation for agnostids, thereby elucidating their response during Paleozoic. results indicate that maximum was reached by...