Publications by authors named "Jih-Pai Lin"

4 Publications

  • Page 1 of 1

Paleontological Studies of Whale Barnacles in Taiwan Reveal New Cetacean Migration Routes in the Western Pacific Since the Miocene.

Zool Stud 2019 12;58:e39. Epub 2019 Dec 12.

Department of Geosciences, National Taiwan University, Taipei 106, Taiwan.

This paper reports a rediscovery of the first museum specimens of fossil whale barnacles from Taiwan. They are part of the material studied and figured by Ichiro Hayasaka in 1934. After examination of the material, which includes two cut-sections and one slice, the taxonomic assignment is revised to Bronn, 1831. A petrographic study of the surrounding matrix shows that the matrix lacks slate and lithic fragments, indicating that the specimen was deposited in the pre-collision settings during the Miocene to early Pliocene. Figured specimens in Hatai's work in 1939 were examined for comparison. The distribution record of fossils shows that whales passed through the Taiwan Strait to Okinawa and moved northwards via the Pacific coast of Honshu or entered into the Sea of Japan. The fossil record in this region extends back to the upper Miocene in Yamagata prefecture (facing the Sea of Japan) and Boso Peninsula (facing the Pacific Ocean) in Honshu (~11.2 Ma-5.3 Ma). This is one of the oldest cetacean migration routes documented to date.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.6620/ZS.2019.58-39DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6971528PMC
December 2019

Chemostratigraphic correlations across the first major trilobite extinction and faunal turnovers between Laurentia and South China.

Sci Rep 2019 11 22;9(1):17392. Epub 2019 Nov 22.

Institut für Geologie, Technische Universität Bergakademie Freiberg, Bernhard-von-Cotta-Straße 2, D-09599, Freiberg, Germany.

During Cambrian Stage 4 (~514 Ma) the oceans were widely populated with endemic trilobites and three major faunas can be distinguished: olenellids, redlichiids, and paradoxidids. The lower-middle Cambrian boundary in Laurentia was based on the first major trilobite extinction event that is known as the Olenellid Biomere boundary. However, international correlation across this boundary (the Cambrian Series 2-Series 3 boundary) has been a challenge since the formal proposal of a four-series subdivision of the Cambrian System in 2005. Recently, the base of the international Cambrian Series 3 and of Stage 5 has been named as the base of the Miaolingian Series and Wuliuan Stage. This study provides detailed chemostratigraphy coupled with biostratigraphy and sequence stratigraphy across this critical boundary interval based on eight sections in North America and South China. Our results show robust isotopic evidence associated with major faunal turnovers across the Cambrian Series 2-Series 3 boundary in both Laurentia and South China. While the olenellid extinction event in Laurentia and the gradual extinction of redlichiids in South China are linked by an abrupt negative carbonate carbon excursion, the first appearance datum of Oryctocephalus indicus is currently the best horizon to achieve correlation between the two regions.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41598-019-53685-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6874646PMC
November 2019

The first complete mitochondrial genome of the sand dollar Sinaechinocyamus mai (Echinoidea: Clypeasteroida).

Genomics 2020 03 17;112(2):1686-1693. Epub 2019 Oct 17.

Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, USA.

Morphologic and molecular data often lead to different hypotheses of phylogenetic relationships. Such incongruence has been found in the echinoderm class Echinoidea. In particular, the phylogenetic status of the order Clypeasteroida is not well resolved. Complete mitochondrial genomes are currently available for 29 echinoid species, but no clypeasteroid had been sequenced to date. DNA extracted from a single live individual of Sinaechinocyamus mai was sequenced with 10× Genomics technology. This first complete mitochondrial genome (mitogenome) for the order Clypeasteroida is 15,756 base pairs in length. Phylogenomic analysis based on 34 ingroup taxa belonging to nine orders of the class Echinoidea show congruence between our new genetic inference and published trees based on morphologic characters, but also includes some intriguing differences that imply the need for additional investigation.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.ygeno.2019.10.007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7032948PMC
March 2020

Function and hydrostatics in the telson of the Burgess Shale arthropod Burgessia.

Authors:
Jih-Pai Lin

Biol Lett 2009 Jun 4;5(3):376-9. Epub 2009 Mar 4.

School of Earth Sciences, Ohio State University, 125 South Oval Mall, Columbus, OH 43210, USA.

Burgessia bella is a characteristic Burgess Shale arthropod (508 Ma), but the unusual preservation of its telson in both straight and bent modes leads to contradictory interpretations of its function. A reinvestigation of the fossil material, including burial attitudes, combined with a comparison with the decay sequence and mechanics of the telson in living Limulus, demonstrates that the telson of Burgessia was flexible in its relaxed state but could be stiffened in life. Evidence of fluid within the telson indicates that this manoeuvrability was achieved by changes in hydrostatic pressure and muscular control. The dual mode in the Burgessia telson is, to my knowledge, the first documented among fossil arthropods. It indicates that the requirement for a rigid telson, which is resolved by a thick sclerotized cuticle in most arthropods, may first have been achieved by hydrostatic means.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1098/rsbl.2008.0740DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2679911PMC
June 2009