-
Pteridosperm spore organs:
Aulacotheca (male), Boulaya,
Potoniea (male),
Whittleseya (male)
Pteridosperm seeds: Gnetopsis, Hexagonocarpus, Holcospermum, Lagenospermum...
- configurations, ****igned to
various fossil genera including Dolerotheca,
Whittleseya,
Aulacotheca and Potoniea.
Unlike with the ovules,
there is good anatomical...
- †Welleria †Welleria
obliqua †Whitfieldella †Whitfieldella
marylandica †
Whittleseya †
Whittleseya elegans †Wilkingia †Wilkingia
andrewsi †Wilkingia
neglecta – or...
- Y Z †Westonia †Westonia
superba †Wewokella †Wewokella
costata †
Whittleseya †
Whittleseya elegans Contents A B C D E F G H I J K L M N O P Q R S T U V W...
-
nitida †Whitfieldoceras –
tentative report †Whitfieldoceras
casteri †
Whittleseya †Wilsonicrinus †Wilsonicrinus
discoideus †Wilsoniella †Wilsoniella saffordi...
- †Whitella †Whitella
sterlingensis †Whitfieldella †Whitfieldella
billingsana †
Whittleseya †Wilkingia †Wilkingia
costatum †Wilsonites †Wilsonites
circularis †Wilsonites...
