Table 1.

Macrofossil raw quadrat counts

	USNM 40071	USNM 40070	USGS 9998C	USNM 40069	USGS 9998A	USGS 9998B
Informative quadrats	90	125	67	182	633	24
Barren quadrats	13	0	1	29	101	2
Sampling level	Top bed	Middle bed	Middle bed	Lower bed	Lower bed	Lower bed
Aphlebia erdmannii		33	16
Lepidophylloides spp.	2
Calamitalean stems	15	2	3
Asterophylites sp.		2
Annularia carinata	26
Calamostachys sp.		1
Palaeostachya sp.					1
Sphenophyllum miravallis		3	7
Sphenophyllum angustifolium	1
Sphenophyllum cf. thonii	32
Sphenophyllum reproductive organ	1
Sphenopteris small fern		1	1	1
Pecopteris cf. jongmansii	18	98	49
Pecopteris cf. cyathea		7
Marattialean: lobatopterid 1	1	10
Marattialean: lobatopterid 2		2
Marattialean: polymorphopterid	26		7
Marattialean: large, Ad-obscure		4
Marattialean: large, sparse veins	1
Marattialean: Asterotheca	1	13
Diplazites unitus	3
Indeterminate neuropterid	2				1
Neuropteris cf. ovata				1
cf. Neurodontopteris auriculata				1	1
Odontopteris cf. readii				12	37
Odontopteris subcrenulata					69	4
Reticulopteris sp.					1
Autunia conferta	4			5	49	1
Rhachiphyllum sp.				1	2
Autunia naumannii	1				3	2
Arnhardtia scheibeii	1
Autunia repro organ				1	2
cf. Peltaspermum sp.					3
Cordaites sp.				3	3
Walchia sp.	6
Walchia piniformis				12	34	1
Walchia cf. schneideri				35	136	2
Sphenopteris germanica	9			151	473	19
S. germanica repro organs				3	1
Charliea or Yuania				1	5
UN foliage cf. odontopterid				1	1
Seeds	9	1		7	49	1
Axes	34	98	56	50	165	5
Roots					1
Comminuted plant debris			1		28
Charcoal	3			3	11
Conchostracans	1				4
Shark coprolite	1

USNM and USGS collections