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Caesalpinia claibornensis
Taxonomy
Caesalpinia claibornensis was named by Herendeen and Dilcher (1991). Its type locality is Warman Clay Pit, which is in an Eocene/Eocene terrestrial horizon in the Claiborne Formation of Tennessee.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1991 | Caesalpinia claibornensis Herendeen and Dilcher |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Caesalpinia claibornensis Herendeen and Dilcher 1991
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Diagnosis
Reference | Diagnosis | |
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P. S. Herendeen and D. L. Dilcher 1991 | Fruits are 5.1-8.1 cm long (x=6.9 cm), 1.2-2.1 cm wide (x=1.7 cm, excluding the wing) and have a continuous vascularized wing along the placental suture that is 3.5-9 mm wide (x=4.7 mm, max. width). The wing is usually wider at the fruit center than at the ends. The fruits are thin and membranous. The fruit base is acute to obtuse, the apex is blunt and rounded or occasionally mucronate with a persistent style base (ca. 1 mm long). The fruits are short stipitate (ca. 2 mm) and contain three to seven ovules. The fruit valve venation consists of numerous, closely spaced primary veins that arise from the placental and nonplacental sutures at 90 degrees angles. These veins divide and anastomose to form a fine reticulum. The wing venation consists of a poorly organized storied looping pattern in which veins arise from the placental suture, divide several times, and return toward the suture. The valve venation is often better preserved than is the wing venation. |
Measurements
No measurements are available
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Source: p = phylum | |||||
Reference: Kiessling 2009 |
Age range: base of the Middle Eocene to the top of the Late/Upper Eocene or 48.60000 to 33.90000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Middle Eocene - Late/Upper Eocene | USA (Tennessee) | Caesalpinia claibornensis (type locality: 31662) |