Kloster and Gnaedinger—Agathoxylon wood anatomy from La Matilde Formation, Argentina
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Figure 10. Plotted dispersion graphics based on Agathoxylon from La Matilde Formation and from the Gondwana. Aa=Agathoxylon africanum;Ak=A. karooensis; Ap=A. protoaraucana;Al=Agathoxylon liguaensis:Al1=Chile, Al2=Argentina; At=A. termieri:At1=Attims, 1965; At2=Giraud and Hankel, 1985; At3=this work; As=Araucarioxylon sp. (Falcon-Lang and Cantrill, 2000); Ach=A. chapmanae Poole and Cantrill, 2001; Asa=A. santalense (this work); A1=Araucarioxylon sp. 1; A2=Araucarioxylon sp. 2 (Falcon-Lang and Cantrill, 2001); Aam=A. agathioides;Asm=A. santacruzense (this work). *=mean value.
a predominance of a series of 1–2pits,aswellasbythe presence of groups of pits in the first species, while in the second, biseriate radial pitting predominates. In contrast, Agathoxylon termieri
(Attims) Gnaedinger and Herbst is definedbyaseriesof1–3pits and its different combinations of circular pits, with a predominance of uniseriate pits, and A. santacruzense n. sp. is well definedbya
