scholarly journals First discovery of Stegodon (Proboscidea) in Malaysia

Warta Geologi ◽  
2020 ◽  
Vol 46 (3) ◽  
pp. 196-198
Author(s):  
Ros Fatihah Muhammad ◽  
◽  
Tze Tshen Lim ◽  
Norliza Ibrahim ◽  
Mohd Azmi Abdul Razak ◽  
...  

A cheek tooth of Stegodon, an extinct genus of Proboscidea, had been discovered in a cave in Gopeng, Perak. The discovery represents the first fossil of Stegodon ever found in Malaysia. Embedded in lithified cave infillings are the associated dental remains from at least three or four other different taxa of fossil mammals commonly found among Southeast Asian Pleistocene-Holocene faunas. The finding provides a unique chance for investigations into the evolution dynamics of Stegodon in this part of Southeast Asia and the species diversity of Proboscidea in prehistoric Peninsular Malaysia. Fossil mammal assemblages from different phases of Pleistocene-Holocene period collected from karstic caves in Peninsular Malaysia, when considered with similar assemblages from other parts of Southeast Asia, have the potential to contribute to our understanding of prehistoric faunal migrations and species compositional changes among the biogeographic (sub)divisions in Southeast Asia. This may ultimately lead to a better knowledge of the possible paleoenvironmental and paleoclimatic fluctuations that influenced patterns of migration and adaptive responses of mammalian faunas in Quaternary Southeast Asia.

Zootaxa ◽  
2011 ◽  
Vol 2928 (1) ◽  
pp. 1 ◽  
Author(s):  
L. X. EOW ◽  
L. A. MOUND ◽  
Y. F. NG

An illustrated key is provided to the 31 genera of the subfamily Idolothripinae recorded from Southeast Asia, and a checklist provided to 34 species recorded from Peninsular Malaysia. Notes are given on the habitat preferences of these fungal spore-feeding thrips, together with for each genus some discussion of systematic relationships and species diversity.


2019 ◽  
Vol 80 (11) ◽  
pp. 906-907
Author(s):  
Chun-Lai Too ◽  
Lay-Kim Tan ◽  
Hussein Heselynn ◽  
Shahril Nor-Shuhaila ◽  
Mageswaran Eashwary ◽  
...  

Zootaxa ◽  
2005 ◽  
Vol 851 (1) ◽  
pp. 1 ◽  
Author(s):  
HEOK HEE NG ◽  
KELVIN K.P. LIM

The identity of the poorly known bagrid catfish Pseudomystus moeschii (Boulenger, 1890) is clarified and the species redescribed. Two new species of closely related bagrid catfishes are also described: Pseudomystus carnosus from the Way Seputih River drainage in the province of Lampung in the southern tip of Sumatra, and P. fumosus from the Pahang River drainage in eastern Peninsular Malaysia. Pseudomystus carnosus, P. fumosus and P. moeschii can be distinguished from congeners in having an enlarged posterior process of the post-temporal, presence of long hair-like epithelial projections on the skin and long tubular extensions of the sensory pores. Pseudomystus carnosus differs from the other two species in having a pointed (vs. rounded) tip of the nuchal shield, while P. fumosus differs from the other two species in having very well developed procurrent caudal rays which are sinuously curved along the anterior edges (vs. less developed procurrent caudal rays that slope evenly along the edges). A lectotype is designated for P. moeschii.


2020 ◽  
Vol 55 (9) ◽  
pp. 6361-6375
Author(s):  
Hassan Baioumy ◽  
Mohammad Noor Akmal Bin Anuar ◽  
Mohd Nawawi Mohd Nordin ◽  
Mohd Hariri Arifin ◽  
Khaled Al‐Kahtany

2020 ◽  
Vol 81 (6) ◽  
pp. 263-264
Author(s):  
Ahmad Fauzi Nurul-Aain ◽  
Lay-Kim Tan ◽  
Hussein Heselynn ◽  
Shahril Nor-Shuhaila ◽  
Mageswaran Eashwary ◽  
...  

Zootaxa ◽  
2011 ◽  
Vol 2757 (1) ◽  
pp. 1 ◽  
Author(s):  
ANITA MALHOTRA ◽  
ROGER S. THORPE ◽  
MRINALINI _ ◽  
BRYAN L. STUART

We describe two new species of green pitviper from Southeast Asia that are morphologically similar to Cryptelytrops macrops, but can be distinguished from that species by genetic means, multivariate analysis of morphology and some aspects of coloration. Cryptelytrops cardamomensis sp. nov., is described from southeastern Thailand and the Cardamom Mountains of southwestern Cambodia. Cryptelytrops rubeus sp. nov. has been recorded from southern Vietnam and eastern Cambodia. These species have previously been confused with C. macrops, hence we also present here a redescription of this species, whose range is now restricted to Thailand, southern and central Laos, and northeastern Cambodia. All three species are present in Cambodia, but have disjunct ranges corresponding to three separate highland regions in southwestern (Cardamom Mountains), northeastern (western edge of the Kontum Plateau) and eastern (low elevation hills on the western edge of the Langbian Plateau) Cambodia for C. cardamomensis, C. macrops and C. rubeus respectively. However, there is still considerable morphological variation between geographically separated populations of C. macrops s.s., and greater sampling in southern and northern Thailand in particular may be required before the species diversity of this group is fully clarified.


2018 ◽  
Author(s):  
Ayoe Buus Hansen ◽  
Wei Ming Chong ◽  
Emma Kendall ◽  
Boon Ning Chew ◽  
Christopher Gan ◽  
...  

Abstract. This paper presents a study of haze in Singapore caused by biomass burning in Southeast Asia over the six year period from 2010 to 2015, using the Lagrangian dispersion model, NAME. The major contributing source regions are shown to be Riau, Peninsular Malaysia, South Sumatra, and Central and West Kalimantan. However, we see differences in haze concentrations and variation in the relative contributions from the various source regions between monitoring stations across Singapore, as well as on an inter-annual timescale. These results challenge the current popular assumption that haze in Singapore is dominated by emissions/burning from only Indonesia. It is shown that Peninsular Malaysia is a large source for the Maritime Continent off-season biomass burning impact on Singapore. As should be expected, the relatively stronger southeast monsoonal winds that coincide with increased biomass burning activities in the Maritime Continent create the main haze season from August to October (ASO), which brings particulate matter from several and varying source regions to Singapore. In contrast, atypical haze episodes in Singapore are characterised by atypical weather conditions, ideal for biomass burning, and emissions dominated by a single source region (for each event). The two most recent atypical haze events in mid 2013 and early 2014 have different source regions, whereas a different set of five regions dominate as major contributing source regions for most of the recent ASO haze seasons. Haze in Singapore varies across year, season, and location it is influenced by local and regional weather, climate, and regional burning. The study shows that even across small scales, such as in Singapore, variation in local meteorology can impact concentrations of particulate matter significantly, and emphasises the importance of the scale of modelling both spatially and temporally.


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