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Pachytestopsis tayloriorum
Pachytestopsis tayloriorum McLoughlin, Bomfl., Drinnan in M. Krings, C.J. Harper, Cúneo, G.W. Rothwell Transf. Paleobot. 157. 18 Jul 2018
- Name
- Pachytestopsis tayloriorum
- Rank
- Species
- Generic Name
- [Genus] Pachytestopsis
- Authors (Pub.)
- McLoughlin S.
Bomfleur B.
Drinnan A. N.
- Publication
- Pachytestopsis tayloriorum gen. et sp. nov., an anatomically preserved Glossopterid seed from the Lopingian of Queensland, Australia [2018/7]
- Authors (Book)
- Krings M.
Harper C. J.
Cúneo N. R.
Rothwell G. W.
- Book
- Transformative Paleobotany
- Page number
- 157
- Year
- 2018
- Fossil Status
- seeds
- Stratigraphy
- Changhsingian
- Strat. comment
- Fort Cooper Coal Measures (Blackwater Group)
- Location
- Small, roadside outcrop (HV6) near the central eastern boundary of the Hail Creek
Coalfield, situated c. 10 km WSW of Homevale and c.
35 km NW of Nebo, Queensland, Australia
- Paleoregion
- Gondwana (Australia)
Data for Holotypus
- Repository
- Naturhistoriska riksmuseet, Stockholm, Sweden
- Repository Number
- NRMS089801-01-01
- Diagnosis
- Seed coat consisting of lignified exotesta
with epidermis and hypodermis c. 2e3 cell layers thick
composed of thickened prismatic cells; mesotesta of
longitudinally arranged cells differentiated into narrow
outer layer of thin-walled cells and inner layer of sclereids;
and parenchymatous endotesta. Exotesta forming a pair of
thin lateral wings in primary plane, of more-or-less even
width from base to micropyle, containing a narrow core
of outer mesotestal parenchyma. Inner mesotesta up
to 600 mm thick with an outer boundary of irregular
projections or ridges. Vasculature consisting of a terete
strand entering straight through the chalaza and bifurcating
and abruptly terminating in a discoidal to cup-shaped
nucellar pad; testa is otherwise unvascularized. Basal
nucellar pad up to 230 mm thick, tapering distally into
cutinized nucellar wall with straight longitudinal anticlinal
cell walls and oblique end walls. Megaspore membrane
<10 mm thick.