Morphological and morphometric analysis of variation in the Zhoukoudian Homo erectus brain endocasts

2010 ◽  
Vol 211 (1-2) ◽  
pp. 4-13 ◽  
Author(s):  
Xiujie Wu ◽  
Lynne A. Schepartz ◽  
Christopher J. Norton
2016 ◽  
Vol 36 (2) ◽  
pp. 141-160 ◽  
Author(s):  
Sofwan Noerwidi

In 2014 there was found two "enigmatic" specimens of mandible, which named as Semedo 3417 and 3418. Both mandibles are morphologically similar but twice bigger than common primate’s jaw. In this research, we use morphology and morphometric analysis to determine the species identity and taxonomic position of those specimens. For comparison study we use some samples from Homo erectus (Java and China), Gigantopithecus (blacki and bilaspurensis), Australopithecines (robust and gracile). Based on morphology and morphometric characters on the mandible and teeth, it is concluded that Semedo specimen tends to be close to Gigantopithecus blacki. The discoveries of Gigantopithecus fossil in Java has implication on some research problem, especially regarding the adaptation pattern of this species which known only found at high latitudes environment. Furthermore this discovery has reinforced the perspective that tropical environment has a very high biodiversity, particularly on primate fossils.


2019 ◽  
Vol 170 (3) ◽  
pp. 361-372 ◽  
Author(s):  
Stephanie Lois Zlolniski ◽  
Nicole Torres‐Tamayo ◽  
Daniel García‐Martínez ◽  
Esther Blanco‐Pérez ◽  
Federico Mata‐Escolano ◽  
...  

2014 ◽  
Vol 225 (2) ◽  
pp. 246-261 ◽  
Author(s):  
Ashley A. Weaver ◽  
Samantha L. Schoell ◽  
Joel D. Stitzel

2017 ◽  
Vol 36 (2) ◽  
pp. 141
Author(s):  
Sofwan Noerwidi ◽  
Siswanto Siswanto ◽  
Harry Widianto

In 2014 there was found two "enigmatic" specimens of mandible, which named as Semedo 3417 and 3418. Both mandibles are morphologically similar but twice bigger than common primate’s jaw. In this research, we use morphology and morphometric analysis to determine the species identity and taxonomic position of those specimens. For comparison study we use some samples from Homo erectus (Java and China), Gigantopithecus (blacki and bilaspurensis), Australopithecines (robust and gracile). Based on morphology and morphometric characters on the mandible and teeth, it is concluded that Semedo specimen tends to be close to Gigantopithecus blacki. The discoveries of Gigantopithecus fossil in Java has implication on some research problem, especially regarding the adaptation pattern of this species which known only found at high latitudes environment. Furthermore this discovery has reinforced the perspective that tropical environment has a very high biodiversity, particularly on primate fossils.


1990 ◽  
Vol 3 (2) ◽  
pp. 253 ◽  
Author(s):  
RK Crowden ◽  
Y Menadue

Ten taxa related to Epacris tasmanica W.M. Curtis (the 'Epacris tasmanica complex') were difficult to separate using available identification keys. Morphopmetric analysis was used to examine the relationships within these taxa. It showed that E. tasmanica s.l. comprised two species, E. tasmanica s. str. and E. virgata. The status of four other existing species is maintained and one new species is confirmed, while the two remaining taxa require further examination.


2014 ◽  
Vol 275 (11) ◽  
pp. 1284-1299 ◽  
Author(s):  
Ashley A. Weaver ◽  
Samantha L. Schoell ◽  
Callistus M. Nguyen ◽  
Sarah K. Lynch ◽  
Joel D. Stitzel

Author(s):  
Elsie M. B. Sorensen

The detoxification capacity of the liver is well documented for a variety of substances including ethanol, organic pesticides, drugs, and metals. The piscean liver, although less enzymatically active than the mammalian counterpart (1), contains endoplasmic reticulum with an impressive repertoire of oxidizing, reducing, and conjugating abilities (2). Histopathologic changes are kncwn to occur in fish hepatocytes following in vivo exposure to arsenic (3); however, ultrastructural changes have not been reported. This study involved the morphometric analysis of intracellular changes in fish parynchymal hepatocytes and correlation with arsenic concentration in the liver.Green sunfish (Lepomis cyanellus, R.) were exposed to 0, 30, or 60 ppm arsenic (as sodium arsenate) at 20°C for 1, 2, or 3 week intervals before removal of livers for quantification of the arsenic burden (using neutron activation analysis) and morphometric analysis of ultrastructural alterations. Livers were cut into 1 mm cubes for fixation, dehydration, and embedding.


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