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Table 2 Comparison of Scirpus weichangensis X.Q. Liang, sp. nov. with other fossil species

From: Fruits of Scirpus (Cyperaceae) from the early Miocene of Weichang, Hebei Province, North China and their palaeoecological and palaeobiogeographical implications

Species

Shape

3-sided

Length (mm)

Width (mm)

Surface

Bristle

Barbellae (μ)

Site

Epoch

Reference

Fossil

Obovate

+

0.88 ± 0.04

0.65 ± 0.05

Net

3

Apical half

Weichang, China

Miocene

This study

S. foveolatus Nikitin

Obovate

+

2.5–3.4

1.2–2.0

Polygonal and isodiametric

  

Tyumen

Oliocene

Nikitin 2006

S. clavatus Nikitin

 

+

1.6–2.1

0.5–0.7

   

Novosibirsk

Oliocene

Nikitin 2006

S. chandlerae Nikitin

Ovate-obovate

+

1.2–1.6

0.9–1.1

   

Tomsk

Oliocene

Nikitin 2006

S. nagorskyi Dorofeev

  

0.9–1.0

0.3–0.5

   

Tomsk

Miocene

Dorofeev 1963

S. novorossicus Doweld

Ovate

+

1.4–2.1

0.6–1.0

   

Odessa, Ukraine

Miocene

Doweld 2018

S. atroviroides Wieliczk

Obovate

 

0.9

0.55

Small-celled

  

Czarnucha

Pliocene

Stachowicz-Rybka 2005

Scirpus sp.

Obovate

   

Longitudinal rows of cells

6–8

 

Kathmandu, Nepal

Pleistocene

Bhandari et al. 2009