Dulcina liogliogensis, Kiel & Aguilar & Kase, 2020
publication ID |
https://doi.org/ 10.4202/app.00756.2020 |
publication LSID |
lsid:zoobank.org:pub:3B7C70AD-CC73-44D5-921E-B1BA0503FC29 |
persistent identifier |
https://treatment.plazi.org/id/4637E9DC-6DE5-43B0-A3D0-4AFC72FAEEC2 |
taxon LSID |
lsid:zoobank.org:act:4637E9DC-6DE5-43B0-A3D0-4AFC72FAEEC2 |
treatment provided by |
Felipe |
scientific name |
Dulcina liogliogensis |
status |
sp. nov. |
Dulcina liogliogensis View in CoL sp. nov.
Fig. 7 View Fig .
Zoobank LSID: urn:lsid:zoobank.org:act:4637E9DC-6DE5-43B0-A3D0-4AFC72FAEEC2
Etymology: In reference to the type locality at Liog-Liog Point.
Type material: Holotype NMP-2161, an articulated specimen; paratypes: NMNS PM 28127 (articulated), NMNS PM 28130 (left valve), NMNS PM 28131 (internal mold), NMNS PM 28136 (articulated), 28165 (internal mold).
Type locality: Liog-Liog Point , Leyte, Philippines .
Type horizon: Upper Pliocene part of the Bata Formation .
Material.— Late Pliocene of Liog-Liog Point : type material and many specimens including ( NMNS PM 28127– 28130 , 28135–28137 View Materials ) ; early Pleistocene of Buhoc Point : two specimens ( NMNS PM 28131 , 28165 View Materials ) ; early Pleistocene of Amtipolo Point : four specimens ( NMNS PM 28138–28141 ) .
Dimensions (in mm). — NMP-2161, L = 69.5, H = 61.2; NMNS PM 28127, L = 64.4, H = 58.5; NMNS PM 28130, L = 63.7, H = 56.1; NMNS PM 28131, L = 64.3, H = 56.4; NMNS PM 28136, L = 65.6, H = 61.4; NMNS PM 28165, L = 52.0, H = 49.1.
Diagnosis.—Large, little inflated Dulcina with broad posterior margin; growth lines irregular, indistinct; hinge plate narrow with remnant of cardinal tooth in left valve.
Description.—Large, rather flat shells with oval outline, W/L ratio c. 0.38; umbones small, prosogyrate, elevated, positioned anteriorly at about 40% of total shell length; anterior margin broad, well-rounded; posterior side tapering on both dorsal and ventral sides, posterior margin truncate; escutcheon lanceolate; lunule small, elongate; anterodorsal area narrow, marked by distinct incision; posterodorsal area narrow, marked by shallow sulcus; external sculpture of irregular commarginal growth increments. Shell interior with faint radial striations; anterior adductor muscle scar elongate, reaching below horizontal midline of shell to ~60% total shell height, detached from pallial line for 3/5 its length; posterior adductor muscle scar pear-shaped, broad groove running from umbo to its anterior margin; hinge plate narrow, left valve with remnant of short cardinal 4b; length of ligament nymph ~70% of length of posterodorsal margin.
Remarks.— Dulcina liogliogensis sp. nov. is somewhat similar to D. guidoi but with broader posterior margin (not as acutely rounded as in guidoi ); furthermore, Dulcina guidoi reaches 42 mm, whereas Dulcina liogliogensis reaches 60 mm, and the umbones of D. liogliogensis are in a more central position compared to D. guidoi , where they are displaced toward the anterior.
Stratigraphic and geographic range.—Late Pliocene, Leyte, Philippines.
NMNS |
National Museum of Natural Science |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.